Editing Astrological aspect

{{Short description|Angle the planets make to each other in the horoscope}}
{{more citations needed|date=September 2014}}
[[File:Natal Chart -- Adam.svg|500px|thumb|right|Astrological aspects are illustrated in the center of this [[natal chart]]. Different symbols and colors illustrate different aspects, such as the red square or green trine.]]

In [[astrology]], an '''aspect''' is an [[angle]] that [[Planets in astrology|planets]] make to each other in the [[horoscope]]; as well as to the [[Ascendant]], [[Midheaven]], [[descendant (astrology)|Descendant]], [[Imum coeli|Lower Midheaven]], and other points of astrological interest. As viewed from [[Earth]], aspects are measured by the [[angular distance]] in degrees and minutes of [[ecliptic]] longitude between two points. According to astrological tradition, they indicate the timing of transitions and developmental changes in the lives of people and affairs relative to the Earth.

For example, if an [[astrologer]] creates a [[Horoscope]] that shows the apparent positions of the celestial bodies at the time of a person's birth ([[Natal astrology|Natal Chart]]), and the angular distance between [[Planets in astrology#Mars|Mars]] and [[Planets in astrology#Venus|Venus]] is 92° ecliptic longitude, the chart is said to have the aspect "Venus [[#Square|Square]] Mars" with an [[Celestial orb|orb]] of 2° (i.e., it is 2° away from being an exact Square; a Square being a 90° aspect). The more exact an aspect, the stronger or more dominant it is said to be in shaping character or manifesting change.<ref>{{cite web
|url=http://astrologyclub.org/guide/aspects/
|title=The Aspects
|work=Astrology Club
|access-date=2016-10-30
|archive-date=2014-08-06
|archive-url=https://web.archive.org/web/20140806094634/http://astrologyclub.org/guide/aspects/
|url-status=live
}}</ref>

With Natal charts, other signs may take precedence over a Sun sign. For example, an Aries may have several other planets in Cancer or Pisces. Therefore, the two latter signs may be more influential.

==History and approach==
In medieval astrology, certain aspects and [[planet]]s were considered to be either favorable ([[Benefic planet|benefic]]) or unfavorable ([[Malefic planet|malefic]]). Modern usage places less emphasis on these fatalistic distinctions. The more modern approach to astrological aspects is exemplified by research on astrological harmonics. In 1619, [[Johannes Kepler]] advocates this in his book ''[[Harmonice Mundi]]''. Thereafter, [[John Addey (astrologer)|John Addey]] was a major proponent. However, even in modern times, aspects are considered to be either easy (60° ''[[Astrological aspect#Sextile|Sextile]]'' or
120° ''[[trine (astrological aspect)|Trine]]'') or hard (90° ''[[Square]]'' or 180° ''[[opposition (astrology)|Opposition]]''). Depending on the involved planets, a ''[[Conjunction (astrology)|Conjunction]]'' (0°, which is a discounting [[Celestial orb|orb]]) may be in either category.

Easy aspects may be positive, because they enhance opportunity for talent to grow. 
Hard aspects may be negative, because they enhance a challenge where an adjustment must be made to reach balance. Typically, manifestation may occur with a Conjunction, Square or Opposition.

Planets may be considered. [[Mars]] and [[Uranus]] tend to ignite while [[Saturn]] and [[Neptune]] inhibit. Whether a planet is [[Retrograde and prograde motion|direct]] or [[Retrograde and prograde motion|retrograde]] is of great significance. An [[eclipse]] of the Sun or Moon is even more significant. The [[South Node]] of the Moon denotes innate wisdom from past experience while the [[North Node]] denotes karma and evolution.

Astrological [[Astrological sign|Signs]] may be considered. For example, the fire signs of [[Aries (astrology)|Aries]], [[Leo (astrology)|Leo]] and [[Sagittarius (astrology)|Sagittarius]] are more compatible with the air signs of [[Gemini (astrology)|Gemini]], [[Libra (astrology)|Libra]] and [[Aquarius (astrology)|Aquarius]]. The Earth signs of [[Taurus (astrology)|Taurus]], [[Virgo (astrology)|Virgo]] and [[Capricorn (astrology)|Capricorn]] are more compatible with the water signs of [[Cancer]], [[Scorpio (astrology)|Scorpio]] and [[Pisces (astrology)|Pisces]]. The mutable signs of Gemini, Virgo, Sagittarius and Pisces may be flexible. The cardinal signs of Aries, Cancer, Libra and Capricorn may change their mind. The fixed signs of Taurus, Leo, Scorpio and Aquarius may be difficult.

Astrological [[House (astrology)|Houses]] may be considered.

=== Ptolemaic Aspects===
Since they were defined and used by [[Ptolemy]] in the 1st Century AD, the traditional major aspects are sometimes called '''Ptolemaic Aspects'''. These aspects are the Conjunction (0°), Sextile (60°), Square (90°), Trine (120°), and Opposition (180°). Major aspects are those that are divisible by 10 and evenly divided in relation to 360° (with the exception of the Semisextile and the Novile).<ref>[https://books.google.com/books?id=iqOODwAAQBAJ Claudius Ptolemy, Harmonics, book III, Chapter 9]</ref>

When calculating or using aspects, it is important to note that different astrologers and separate astrological systems/traditions utilize differing [[Celestial orb|orbs]], which is the degree of separation between exactitude. Orbs may also be subject to variation, depending on the need for detail and personal preferences. Although, when compared to other aspects, almost all astrologers use a larger orb for a Conjunction.

=== Kepler's Aspects===
Collective astrological data along with [[Johannes Kepler]] described 13 aspects in his book ''[[Harmonice Mundi]]''. Astrological data  grouped together in five degrees of influentially picked from symbol ratios encountered in geometry and music: 0/2, 1/2, 1/5, 2/6, 1/3, 1/12 along with 1/5, 2/5, 15/5, 10, 10/3, 8, and 8/3. The general names for whole divisors are ([[Numeral prefix|Latin]]) ''n''-ile for whole fractions 1/''n'', and ''m''-''n''-ile for fraction ''m''/''n''. A Semi-''n''-tile is a ''2n''-tile, 1/(2''n''), and Sesqui-n-tile is a Tri-2''n''-tile, 3/(2''n'').

All aspects can be seen as small whole number [[harmonic]]s, (1/''n'' of 360°). Multiples of ''m''/''n'' create new aspects where there are no common factors between ''n'' and ''m'', [[greatest common divisor|gcd]](n,m)=1.

{| class=wikitable
|+ General Aspects
!Degree of<BR>Influentiality||colspan=2|First|| colspan="2" |Second
! colspan="2" |Third|| colspan="3" |Fourth||colspan=4|Fifth
|-
!Aspect|| [[#Conjunction|Conjunction]]||[[#Opposition|Opposition]]||[[#Trine|Trine]]<BR>Bisextile
![[#Square|Square]]<BR>Quartile||[[#Sextile|Sextile]]<BR>Semitrine||[[#Semisextile|Semisextile]]<BR>Duodecile||[[#Quincunx|Quincunx]]<BR>Quinduodecile||[[#Quintile|Quintile]]<BR>Bidecile||Biquintile||[[#Octile|Octile]]<BR>Semisquare||Trioctile<BR>Sesquiquadrate||[[#Decile|Decile]]<BR>Semiquintile||Tridecile<BR>Sesquiquintile
|- align=center
!Glyph
|[[Image:Conjunction symbol.svg|64px]]||[[Image:Opposition symbol.svg|64px]]||[[Image:Trine symbol.svg|64px]]
|[[Image:Square symbol.svg|64px]]||[[Image:Sextile symbol.svg|64px]]||[[File:Semisextile symbol.svg|54px]]
|[[File:Quincunx symbol.svg|54px]]||<big><big>Q</big></big>||<big><big>bQ</big></big>||[[File:Semisquare symbol.svg|64px]]||[[File:Sesquisquare symbol.svg|64px]]||[[File:Up_tack.svg|56px]]||[[File:Up_tack.svg|56px]]<sup>3</sup>

|- align=center
!Angle
|0°||180°||120°
|90°||60°||30°||150°||72°||144°||45°||135°||36°||108°
|- align=center
!Fraction
| '''0/2''' ||'''1/2'''|| '''1/3'''
|'''1/4'''||'''1/6'''||'''1/12'''||5/12||'''1/5'''||2/5||'''1/8'''||3/8||'''1/10'''||3/10
|- align=center valign=bottom
!valign=center|[[Regular polygon|Regular<BR>Polygon]]
|[[File:Monogon.svg|64px]]<BR>[[Monogon]] || [[File:Digon.svg|64px]]<BR>[[Digon]] || [[File:Regular_polygon_3_annotated.svg|64px]]<BR>[[Equilateral triangle|Triangle]]
|[[File:Regular_polygon_4_annotated.svg|64px]]<BR>[[Square]]|| [[File:Regular_polygon_6_annotated.svg|64px]]<BR>[[Regular hexagon|Hexagon]] ||[[File:Regular_polygon_12_annotated.svg|64px]]<BR>[[Dodecagon]]
|[[File:Regular star polygon 12-5.svg|64px]]<BR>[[Dodecagram]]||[[File:Regular_polygon_5_annotated.svg|64px]]<BR>[[Pentagon]] || [[File:Five_Pointed_Star_Lined.svg|64px]]<BR>[[Pentagram]]||[[File:Regular_polygon_8_annotated.svg|64px]]<BR>[[Octagon]] || [[File:Regular star polygon 8-3.svg|64px]]<BR>[[Octagram]]||[[File:Regular_polygon_10_annotated.svg|64px]]<BR>[[Decagon]] ||[[File:Regular star polygon 10-3.svg|64px]]<BR>[[Decagram (geometry)|Decagram]]
|}

==Major aspects==
[[File:12 astrological aspects.png|thumb|The primary astrological aspects around the sky are: 0° conjunction, 30° semi-sextile, 60° sextile, 90° square, 120° trine, 150° quincunx, and 180° opposition. Five of them exist in east/west pairs.]]
{{Further|Astrological symbols#Aspects}}

===Conjunction===
{{unreferenced section|date=February 2024}}
[[Image:Conjunction symbol.svg|left|50px]] A [[astronomical conjunction|'''Conjunction''']] (abbreviated as "Con") is an angle of approximately (~) 0–⁠10°. Typically, an [[Celestial orb|orb]] of ~10° is considered to be a Conjunction. If neither the [[Sun]] or [[Moon]] are involved, some astrologers consider a maximum orb of 8°.

Conjunctions are a major aspect in a horoscope chart. They are said to be the most powerful aspects, because they mutually intensify the effects of the involved planets.

Depending on the involved planets, a Conjunction may be beneficial or detrimental. Highly favourable Conjunctions may involve the Sun, [[Venus]], and/or [[Jupiter]] as well as any of the three possible combinations. Highly ''un''favourable Conjunctions may involve the Moon, [[Mars]], and/or [[Saturn]] as well as any of the three possible combinations.<ref>{{cite web |url=http://astrologyclub.org/aspects/ |first=Eleanor |last=Buckwalter |title=Depth analysis of the Astrological Aspects |work=Astrology Club |date=15 December 2014 |access-date=2016-10-30 |archive-date=2016-10-31 |archive-url=https://web.archive.org/web/20161031085714/http://astrologyclub.org/aspects/ |url-status=live }}</ref>

Exceptionally, on November 9–10 of 1970, the [[Sun]], [[Venus]], and [[Jupiter]] were in a three-way beneficial Conjunction. In that same year, on March 10, the [[Moon]], [[Mars]], and [[Saturn]] were in 3-way detrimental Conjunction.

If either of two planets involved in a Conjunction is also under tension from one or more hard aspects with one or more other planets, then the added presence of a Conjunction will further intensify the tension of that hard aspect.

If a planet is in ''very'' close Conjunction to the Sun (within 17 minutes of arc or only about 0.28°), the Conjunction is of great strength. The planet is said to be ''Cazimi'', which is an ancient{{clarify|date=February 2024}} astrological term meaning "in the heart" (of the Sun). For example, "Venus ''Cazimi''" means Venus is in Conjunction with the Sun with an orb of less than ~⁠0.28°.

If a planet is moderately close to the Sun, the specific orb limit may depend on the particular planet. It is said to be ''Combust''.
⁠
Every month of the year, during the [[New Moon]], the Sun and Moon experience a Conjunction.

====Great Conjunctions====
{| class=wikitable align=right width=400
|[[File:Jupiter-Saturn-great-conjunctions.png|200px]]<BR>As illustrated, Jupiter and Saturn's Great Conjunctions repeat every ~120°. The three-fold pattern comes from a near 2:5 resonance while their period ratio is closer to 60:149. This creates 89 Conjunctions, which lead to a slow precession of a triangular pattern.
|[[File:Keplers trigon.jpg|200px]]<BR>In 1606, [[Johannes Kepler]]'s book, entitled as ''[[De Stella Nova]]'', illustrated the Trigons of Great Conjunctions.
|}

In the past, Great Conjunctions between the two slowest classical planets, [[Jupiter]] and [[Saturn]], have attracted considerable attention as celestial omens. This interest can be traced back to Arabic translations found in Europe; most notably [[Albumasar]]'s book on Conjunctions.<ref>''De Magnis Coniunctionibus'' was translated in the 12th Century, a modern edition-translation by K. Yamamoto and Ch. Burnett, Leiden, 2000</ref> During the late [[Middle Ages]] and the [[Renaissance]], these omens were a topic broached by most astronomers. This included scholastic thinkers, such as [[Roger Bacon]]<ref>''The Opus Majus'' of Roger Bacon, ed. J. H. Bridges, Oxford:Clarendon Press, 1897, Vol. I, p. 263.</ref> and [[Pierre D'Ailly]].<ref>'' De Concordia Astronomice Veritatis et Narrationis Historice'' (1414) [http://warburg.sas.ac.uk/pdf/fah1620p.pdf] {{Webarchive|url=https://web.archive.org/web/20150208234424/http://warburg.sas.ac.uk/pdf/fah1620p.pdf|date=2015-02-08}}</ref> Omens are also mentioned in popular literary writings by authors, such as [[Dante]]<ref name=Woody>Woody K., ''Dante and the Doctrine of the Great Conjunctions'', Dante Studies, with the Annual Report of the Dante Society, No. 95 (1977), pp. 119–134</ref> and [[Shakespeare]].<ref name=Aston>Aston M., ''The Fiery Trigon Conjunction: An Elizabethan Astrological Prediction'', Isis, Vol. 61, No. 2 (Summer, 1970), pp. 158–187</ref> This interest continued up to the times of [[Tycho Brahe]] and [[Kepler]].

Every 20 years, successive Great Conjunctions move retrograde ~120°. Sequential Conjunctions appear as triangular patterns. They repeat after every third Conjunction; they return after some 60 years to the vicinity of the first. These returns are observed to be shifted by ~8° relative to the fixed stars; no more than four of them occur in the same zodiac sign. Typically, Conjunctions occur in one of the following ''[[Triplicity|Triplicities]]'' or ''Trigons'' of [[Zodiac#Twelve signs|Zodiac]] signs:

{| class="wikitable" style="text-align:center"
! rowspan=2 scope="col" | [[Classical element|Element]]
!colspan=3|Conjunction 1||colspan=3|Conjunction 2||colspan=3|Conjunction 3
|-
! Sign||Symbol||Ecliptic Longitude
! Sign||Symbol||Ecliptic Longitude
! Sign||Symbol||Ecliptic Longitude
|-
![[Fire (classical element)|Fire]] Trigon
! scope="row" | [[Aries (astrology)|Aries]]
|[[Image:Aries symbol (fixed width).svg|20px]]
|1 (0° to 30°)
! scope="row" | [[Leo (astrology)|Leo]]
|[[Image:Leo symbol (fixed width).svg|20px]]
|5 (120° to 150°)
! scope="row" | [[Sagittarius (astrology)|Sagittarius]]
|[[Image:Sagittarius symbol (fixed width).svg|20px]]
|9 (240° to 270°)
|-
![[Earth (classical element)|Earth]] Trigon
! scope="row" | [[Taurus (astrology)|Taurus]]
|[[Image:Taurus symbol (fixed width).svg|20px]]
|2 (30° to 60°)
! scope="row" | [[Virgo (astrology)|Virgo]]
|[[Image:Virgo symbol (fixed width).svg|20px]]
|6 (150° to 180°)
! scope="row" | [[Capricorn (astrology)|Capricorn]]
|[[Image:Capricornus symbol (fixed width).svg|26px]]
|10 (270° to 300°)
|-
![[Air (classical element)|Air]] Trigon
! scope="row" | [[Gemini (astrology)|Gemini]]
|[[Image:Gemini symbol (fixed width).svg|20px]]
|3 (60° to 90°)
! scope="row" | [[Libra (astrology)|Libra]]
|[[Image:Libra symbol (fixed width).svg|24px]]
|7 (180° to 210°)
! scope="row" | [[Aquarius (astrology)|Aquarius]]
|[[Image:Aquarius symbol (fixed width).svg|24px]]
|11 (300° to 330°)
|-
![[Water (classical element)|Water]] Trigon
! scope="row" | [[Cancer (astrology)|Cancer]]
|[[Image:Cancer symbol (fixed width).svg|20px]]
|4 (90° to 120°)
! scope="row" | [[Scorpio (astrology)|Scorpio]]
|[[Image:Scorpius symbol (fixed width).svg|20px]]
|8 (210° to 240°)
! scope="row" | [[Pisces (astrology)|Pisces]]
|[[Image:Pisces symbol (fixed width).svg|20px]]
|12 (330° to 360°)
|}
After about 220 years the pattern shifts to the next Trigon; in ~900 years, the pattern returns to the first Trigon.<ref>If {{mvar|J}} and {{mvar|P}} designate the periods of Jupiter and Saturn then the return takes <math>1/(5/S-2/J)</math> which comes to 883.15 years, but to be a whole number of Conjunction intervals it must be sometimes 913 years and sometimes 854. See Etz.</ref>

To each triangular pattern, astrologers have ascribed one from a series of [[Classical element|four elements]]. Particular importance has been accorded to the occurrence of a Great Conjunction in a new Trigon, which is bound to happen after ~240 years at most.<ref name=Etz>Etz D., (2000), [http://adsabs.harvard.edu/full/2000JRASC..94..174E ''Conjunctions of Jupiter and Saturn''] {{Webarchive|url=https://web.archive.org/web/20200113092414/http://adsabs.harvard.edu/full/2000JRASC..94..174E |date=2020-01-13 }}, Journal of the Royal Astronomical Society of Canada, Vol. 94, p.174</ref> Greater importance is attributed to the beginning of a new cycle, which may occur after all four Trigons have been visited, which occurs in ~900 years.

Typically, medieval astrologers used 960 years as the length of the full cycle, because, in some cases, it took 240 years to pass from one trigon to the next.<ref name=Etz/> If a cycle is defined by when the Conjunctions return to the same [[right ascension]] rather than to the same constellation, the cycle is only ~800 years, because of [[axial precession]]. Use of the [[Alphonsine tables]] apparently led to the use of precessing signs; [[Kepler]] gave a value of 794 years, which created 40 Conjunctions.<ref name=Etz/><ref name="Woody"/>

Up to the end of the 16th century, despite the inaccuracies and some disagreement about the beginning of the cycle, the belief in the significance of such events generated a steady stream of publications. In 1583, the last Great Conjunction occurred in the watery trigon. It was widely supposed to herald apocalyptic changes. In 1586, a [[Papal Bull]] was issued against divinations. By 1603, public interest rapidly died, because nothing really significant had happened with the advent of a new Trigon.

{| class="wikitable sortable" align=right
|+ Aspect Angles as Harmonic Ratios<ref name="L217020">{{cite web|url=https://www.unicode.org/L2/L2017/17020r2-fdbk-extra-aspect-sym.pdf|title=L2/17-020R2: Feedback on Extra Aspect Symbols for Astrology|date=2017-01-24|first=Michel|last=Suignard|access-date=2021-03-18|archive-date=2022-01-19|archive-url=https://web.archive.org/web/20220119073024/http://www.unicode.org/L2/L2017/17020r2-fdbk-extra-aspect-sym.pdf|url-status=live}}</ref>
!Symbol||[[Turn (angle)|Harmonic]]||Angle||Name
|-
|[[Image:Conjunction symbol.svg|24px]]||'''1/1'''||360° (0°)||'''[[Conjunction (astrology)|Conjunction]]''' 
|- bgcolor="#FFFFF0"
|[[Image:Opposition-symbol.svg|24px]] ||'''1/2'''||180°||'''[[Opposition (astrology)|Opposition]]''' 
|- bgcolor="#FFFFF0"
|[[Image:Square-symbol.svg|24px]] [[File:Regular_polygon_4_annotated.svg|24px]]||'''1/4'''||90°||'''[[Square]]''' or Quartile or Quadrate
|- bgcolor="#FFFFF0"
|[[File:Semisquare symbol.svg|24px]] [[File:Regular_polygon_8_annotated.svg|24px]]||'''1/8'''||45°||'''Octile''' or Semisquare

|- bgcolor="#FFFFF0"
|[[File:Sesquisquare-symbol.svg|24px]] [[File:Regular_star_polygon_8-3.svg|24px]]||3/8||135°||'''Trioctile''' or Sesquiquadrate
|- bgcolor="#FFFFF0"
|align=right|[[File:Regular_polygon_16_annotated.svg|24px]] ||'''1/16''' ||22.5°||'''Sexdecile''' or Semioctile
|- bgcolor="#FFFFF0"
| align=right|[[File:Regular_star_polygon_16-3.svg|24px]]||3/16||67.5°||'''Sesquioctile'''
|- bgcolor="#FFFFF0"
| align=right|[[File:Regular_star_polygon_16-5.svg|24px]]||5/16||112.5°||'''Quinsemioctile'''
|- bgcolor="#FFFFF0"
| align=right|[[File:Regular_star_polygon_16-7.svg|24px]]||7/16||157.5°||'''Sepsemioctile'''
|- bgcolor="#FFF0FF"
|[[Image:Trine-symbol.svg|24px]] [[File:Regular_polygon_3_annotated.svg|24px]]||'''1/3'''||120°||'''[[Trine (astrological aspect)|Trine]]''' or Trinovile
|- bgcolor="#FFF0FF"
|[[Image:Sextile-symbol.svg|24px]] [[File:Regular_polygon_6_annotated.svg|24px]]||'''1/6'''||60°||'''[[Astrological aspect#Sextile|Sextile]]''' or Semitrine 
|- bgcolor="#FFF0FF"
|[[File:Semisextile-symbol.svg|24px]] [[File:Regular_star_figure_6(2,1).svg|24px]]||'''1/12'''||30°||'''Duodecile''' or Semisextile
|- bgcolor="#FFF0FF"
|[[File:Quincunx symbol.svg|24px]] [[File:Regular_star_polygon_12-5.svg|24px]]||5/12||150°||'''[[Quincunx]]''' or Quinduodecile or Inconjunct
|- bgcolor="#FFF0FF"
|align=right|[[File:Regular_star_figure_12(2,1).svg|24px]]||'''1/24''' ||15°||'''Quattuorvigintile''' or Semiduodecile
|- bgcolor="#FFF0FF"
|align=right|[[File:Regular_star_polygon_24-5.svg|24px]]||5/24||75°||'''Squile'''
|- bgcolor="#FFF0FF"
|align=right|[[File:Regular_star_polygon_24-7.svg|24px]]||7/24||105°||'''Squine'''
|- bgcolor="#FFF0FF"
|align=right|[[File:Regular_star_polygon_24-11.svg|24px]]||11/24||165°||'''Quindecile'''<ref>Ricki Reeves, 2001, The Quindecile: The Astrology & Psychology of Obsession</ref> or Contraquindecile
|- bgcolor="#FFF0F0"
|{{huge|Q}} [[File:Russian astrological symbol quintile.svg|24px]] [[File:Regular_polygon_5_annotated.svg|24px]]||'''1/5'''||72°||'''[[Quintile (astrology)|Quintile]]''' 
|- bgcolor="#FFF0F0"
|{{huge|bQ}} [[File:Pentagram (bold).svg|24px]]||2/5||144°||'''Biquintile'''
|- bgcolor="#FFF0F0"
|{{huge|D}} [[File:Up_tack.svg|24px]] [[File:Regular_polygon_10_annotated.svg|24px]]||'''1/10'''||36°||'''Decile''' or Semiquintile
|- bgcolor="#FFF0F0"
|{{huge|D<sup>3</sup>}} [[File:Russian astrological symbol tredecile.svg|24px]] [[File:Star_polygon_10-3.svg|24px]]||3/10||108°||'''Tridecile''' or Sesquiquintile
|- bgcolor="#FFF0F0"
|{{huge|√}} [[File:Regular_polygon_15_annotated.svg|24px]]||'''1/15'''||24°||'''Quindecile''' or Trientquintile
|- bgcolor="#FFF0F0"
|{{huge|√<sup>2</sup>}} [[File:Regular_star_polygon_15-2.svg|24px]]||2/15||48°||'''Biquindecile'''
|- bgcolor="#FFF0F0"
|{{huge|√<sup>4</sup>}} [[File:Regular_star_polygon_15-4.svg|24px]]||4/15||96°||'''Quadraquindecile'''
|- bgcolor="#FFF0F0"
|{{huge|√<sup>7</sup>}} [[File:Regular_star_polygon_15-7.svg|24px]]||7/15||168°||'''Sepquindecile'''
|- bgcolor="#FFF0F0"
|{{huge|V}} [[File:Russian astrological symbol vigintile.svg|24px]] [[File:Regular_star_figure_10(2,1).svg|24px]]||'''1/20'''||18°||'''Vigintile''' or Semidecile
|- bgcolor="#FFF0F0"
|{{huge|V<sup>3</sup>}} [[File:Regular_star_polygon_20-3.svg|24px]]||3/20||54°||'''Trivigintile''' or Sesquidecile
|- bgcolor="#FFF0F0"
|{{huge|V<sup>7</sup>}} [[File:Regular_star_polygon_20-7.svg|24px]]||7/20||126°||'''Sepvigintile'''
|- bgcolor="#FFF0F0"
|{{huge|V<sup>9</sup>}} [[File:Regular_star_polygon_20-9.svg|24px]]||9/20||162°||'''Nonvigintile'''
|- bgcolor="#FFF0F0"
|align=right| [[File:Regular_star_figure_20(2,1).svg|24px]]||'''1/40'''||9°||'''Quadragintile''' or Semivigintile
|- bgcolor="#F0FFF0"
|{{huge|S}} [[File:Regular_polygon_7_annotated.svg|24px]]||'''1/7''' ||51.43°||'''[[Septile]]'''
|- bgcolor="#F0FFF0"
|{{huge|S<sup>2</sup>}} [[File:Septagram-starofbabalon.svg|24px]]||2/7||102.86°||'''Biseptile'''
|- bgcolor="#F0FFF0"
|{{huge|S<sup>3</sup>}} [[File:Regular_star_polygon_7-3.svg|24px]]||3/7||154.29°||'''Triseptile'''
|- bgcolor="#F0FFF0"
|align=right|[[File:Regular_star_figure_7(2,1).svg|24px]] ||'''1/14''' ||25.71°||'''Semiseptile'''
|- bgcolor="#F0FFF0"
|align=right|[[File:Regular_star_polygon_14-3.svg|24px]] ||3/14||77.14°||'''Tresemiseptile''' or Sesquiseptile
|- bgcolor="#F0FFF0"
|align=right|[[File:Regular_star_polygon_14-5.svg|24px]]  ||5/14||128.57°||'''Quinsemiseptile'''
|- bgcolor="#F0F0FF"
|{{huge|N}} [[File:Russian astrological symbol novile.svg|24px]] [[File:Regular_polygon_9_annotated.svg|24px]]||'''1/9'''||40°||'''[[Novile]]'''
|- bgcolor="#F0F0FF"
|{{huge|N<sup>2</sup>}} [[File:Russian astrological symbol binovile.svg|24px]] [[File:Regular_star_polygon_9-2.svg|24px]]||2/9||80°||'''Binovile'''
|- bgcolor="#F0F0FF"
|{{huge|N<sup>4</sup>}} [[File:Regular_star_polygon_9-4.svg|24px]]||4/9||160°||'''Quadranovile'''
|- bgcolor="#F0F0FF"
|align=right| [[File:Regular_star_figure_9(2,1).svg|24px]]||'''1/18'''||20°||'''Octodecile''' or Seminovile or Vigintile
|- bgcolor="#F0F0FF"
| align=right|[[File:Regular_star_figure_18(2,1).svg|24px]]||'''1/36'''||10°||'''Trigintasextile'''
|- bgcolor="#F0F0F0"
|{{huge|U}} [[File:Regular_polygon_11_annotated.svg|24px]]||'''1/11'''||32.83°||'''Undecile''' or Undecim or Elftile<ref name="elf">[https://www.aquariuspapers.com/astrology/2015/10/the-spiritual-aspect-series-the-novile-septile-and-elftile-harmonic-aspects-and-their-glyphs.html] {{Webarchive|url=https://web.archive.org/web/20210413225432/https://www.aquariuspapers.com/astrology/2015/10/the-spiritual-aspect-series-the-novile-septile-and-elftile-harmonic-aspects-and-their-glyphs.html|date=2021-04-13}} The German word for 11 is elf.</ref>
|- bgcolor="#F0F0F0"
|{{huge|U<sup>2</sup>}} [[File:Star_polygon_11-2.svg|24px]]||2/11||65.45°||'''Biundecile''' or Bielftile
|- bgcolor="#F0F0F0"
|{{huge|U<sup>3</sup>}} [[File:Star_polygon_11-3.svg|24px]]||3/11||98.18°||'''Triundecile''' or Trielftile
|- bgcolor="#F0F0F0"
|{{huge|U<sup>4</sup>}} [[File:Star_polygon_11-4.svg|24px]]||4/11||130.91°||'''Quadundecile''' or Quadrelftile
|- bgcolor="#F0F0F0"
|{{huge|U<sup>5</sup>}} [[File:Star_polygon_11-5.svg|24px]]||5/11||163.63°||'''Quinundecile''' or Quinelftile
|}

===Opposition===
[[Image:Opposition-symbol.svg|left|50px]] An [[Opposition (astronomy and astrology)|'''Opposition''']] (abbreviated as "Opp") is an angle of 180°, which is {{frac|1|2}} of the 360° [[ecliptic]]. Depending on the involved planets, an [[Celestial orb|orb]] of 5-10° is allowed.<ref name="Greene"/>

An Opposition is said by Ibn Ezra to be the most powerful aspect. An opposition is fundamentally relational but not unifying or blending like a conjunction. Some astrologers say the energies in opposition are prone to exaggeration, because it has a dichotomous quality and issues arising from it are often tense.

All important axes in astrology are essentially Oppositions. Therefore, at its most basic level, an Opposition may often signify a relationship that can be oppositional or complementary.{{citation needed|date=March 2021}}

===Sextile===
[[Image:Sextile-symbol.svg|left|50px]] A [[sextile (astrological aspect)|'''Sextile''']]<ref name="26B9">⚹([[U+26B9]])</ref>(abbreviated as "SXt or Sex") is an angle of 60°, which is {{frac|1|6}} of the 360° [[ecliptic]] or {{frac|1|2}} a trine (120°). Depending on the involved planets, an [[Celestial orb|orb]] of 4-5° is allowed. The symbol is the radii of a hexagon.

Traditionally, a Sextile is said to be similar in influence to a Trine, but less intense. It indicates compatibility and harmony, which eases communication between the two involved elements. It also provides opportunity.{{citation needed|date=March 2021}} See information below on the [[#Semisextile|Semisextile]].

===Square===
[[Image:Square-symbol.svg|left|50px]] A [[square (astrological aspect)|'''Square''']] or ''Quartile'' (abbreviated as "SQr or Squ") is an angle of 90°, which is {{frac|1|4}} of the 360° [[ecliptic]] or {{frac|1|2}} an opposition (180°). Depending on the involved planets, an [[Celestial orb|orb]] of 5-10° is allowed.<ref name="Greene">Orbs used by [[Liz Greene]], see [http://www.astro.com/astrology/in_aspect_e.htm Astrodienst] {{Webarchive|url=https://web.archive.org/web/20210125184849/http://www.astro.com/astrology/in_aspect_e.htm |date=2021-01-25 }}</ref>

Typically, with a Square, Trine or Sextile, the outer or [[superior planet]] has an effect on the inner or inferior planet. A Square creates a strong and usable tension. It may integrate between two different areas of your life or it may offer a turning point where an important decision needs to be made that involves an opportunity at a cost. Typically, it involves [[House (astrology)|Houses]] in different [[Quadrant (circle)|quadrants]].{{citation needed|date=March 2021}}

===Trine===
[[Image:Trine-symbol.svg|left|50px]] A [[trine (astrological aspect)|Trine]] (abbreviated as "Tri") is an angle of 120°, which is {{frac|1|3}} of the 360° [[ecliptic]]. Depending on the involved planets, an [[Celestial orb|orb]] of 5-10° is allowed.

Traditionally, a Trine is extremely beneficial. It indicates harmony, ease and what is natural.  A Trine may involve innate talent or ability. In [[Transit (astrology)|transit]], an event may emerge from a current or past situation in a natural way.{{citation needed|date=March 2021}}

== Minor aspects==

===Semisextile===
[[File:Semisextile-symbol.svg|50px]] A '''Semisextile''' or ''Duodecile'' is an angle of 30°, which is {{frac|1|12}} of the 360° [[ecliptic]]. An [[Orb (astrology)|orb]] of ±1.2° is allowed. The symbol is {{frac|1|2}} a Sextile (60°), which is the top radii of a hexagon; the internal angles are 60°.

Of the minor aspects, it may be the most often used, because it can be easily seen. It indicates a mental interaction between planets; it is more sensually than externally experienced.

With a Semisextile, energy gradually builds and potentiates. Consider other planets, [[Astrological sign|Signs]] and [[House (astrology)|Houses]]. A major aspect transit may be involved. To gain its benefit, make an effort.{{citation needed|date=March 2021}}

===Quincunx===
[[File:Quincunx symbol.svg|left|50px]] A '''[[Quincunx (disambiguation)|Quincunx]]''' or ''Quinduodecile'' or ''Inconjunct'' is an angle of 150°, which is {{frac|5|12}} of the 360° [[ecliptic]]. Depending on the involved planets, an [[Orb (astrology)|orb]] of ±3.5° is allowed. The symbol is the bottom radii of a hexagon, which is {{frac|1|2}} a Sextile (60°) less than a semicircle; the internal angles are 60°.

An interpretation of a Quincunx may mostly rely on the involved planets, [[Astrological sign|Signs]] and [[House (astrology)|Houses]]. Different areas of your life, that are not usually in communication, may come together. Planets may be far apart in different house quadrants. With a shift in perspective, clarity may reveal what was not previously seen. If a third planet, in a major aspect, triangulates a Qunicunx, the effect may be very obvious.

For Quincunx, keywords are karmic, mystery, unpredictable, imbalance, surreal, resourceful, creative, and humor.{{citation needed|date=March 2021}}

A Quincunx does not offer equal divisions of a circle. It represents the 150° [[turn angle]]s of a [[dodecagram]], {12/5}.

<gallery>
Regular star polygon 12-5.svg|[[Dodecagram]] {12/5}
</gallery>

==Other minor aspects==

===Septile===
{{huge|{{huge|S}}}} A '''Septile''' is an angle of about 51.43°, which is {{frac|1|7}} of the 360° [[ecliptic]]. An [[Orb (astrology)|orb]] of ±1° is allowed.

A Septile is a mystical aspect that indicates a hidden flow of energy between the involved planets. Often, it involves spiritual or energetic sensitivity as well as an inner awareness of a more subtle, hidden level of reality.{{citation needed|date=March 2021}}

;Irreducible multiples:
: {{huge|S<sup>2</sup>}} A '''Biseptile''' is an angle of 102.86°, which is {{frac|2|7}} of the 360° ecliptic.
: {{huge|S<sup>3</sup>}} A '''Triseptile''' is an angle of 154.29°, which is {{frac|3|7}} of the 360° ecliptic.
<gallery>
Regular star polygon 7-2.svg|[[Heptagram]] {7/2}
Regular star polygon 7-3.svg|[[Heptagram]] {7/3}
</gallery>

===Octile===
[[File:Semisquare symbol.svg|left|50px]] An '''Octile''' or ''Semisquare'' is an angle of 45°, which is {{frac|1|8}} of the 360° [[ecliptic]]. An [[Celestial orb|orb]] of ±3° is allowed. The symbol is drawn with a 60-90° angle; the original angle is 90°, which is {{frac|1|2}} a Square.

An Octile is an important minor aspect. It indicates stimulating or challenging energy. It is similar to a Square, but doesn't last as long as it has a smaller orb.

;Irreducible Multiples:
[[File:Sesquisquare-symbol.svg|left|50px]] A '''Sesquiquadrate''' or ''Trioctile'' is an angle of 135°, which is {{frac|3|8}} of the 360° ecliptic. An orb of ±1.5° is allowed.

A Sesquiquadrate is a harmonic of a Semisquare, which involves challenge. It is not an exact division of the 360° ecliptic. Therefore, when a Semisquare is present, it does not function as a standalone aspect, but as part of a series. {{citation needed|date=March 2021}}
<gallery>
Regular star polygon 8-3.svg|[[Octagram]] {8/3}
</gallery>

===Novile===
{{huge|{{huge|N}}}} A '''Novile''' is an angle of 40°, which is {{frac|1|9}} of the 360° [[ecliptic]]. An [[Celestial orb|orb]] of ±1° is allowed.

A Novile indicates an energy of perfection and/or idealization.{{citation needed|date=March 2021}}

;Irreducible Multiples:
: {{huge|N<sup>2</sup>}} A '''Binovile''' is an angle of 80°, which is {{frac|2|9}} of the 360° ecliptic.
: {{huge|N<sup>4</sup>}} A '''Quadnovile''' is an angle of 160°, which is {{frac|4|9}} of the 360° ecliptic.

<gallery>
Regular star polygon 9-2.svg|[[Enneagram (geometry)|Enneagram]] {9/2}
Regular star polygon 9-4.svg|[[Enneagram (geometry)|Enneagram]] {9/4}
</gallery>

===Decile===
[[File:Up_tack.svg|50px]] A '''Decile''' is an angle of 36°, which is {{frac|1|10}} of the 360° [[ecliptic]].

;Irreducible Multiples:
: [[File:Up_tack.svg|50px]]<sup>3</sup> A '''Tridecile''' is an angle of 108°, which is {{frac|3|10}} of the 360° ecliptic.

<gallery>
Regular star polygon 10-3.svg|[[Decagram (geometry)|Decagram]] {10/3}
</gallery>

===Undecile===
{{huge|{{huge|U}}}} An '''Undecile''' or ''Elftile''<ref name=elf/> is an angle of 32.73°, which is {{frac|1|11}} of the 360° [[ecliptic]]. An [[Celestial orb|orb]] of ±1° is allowed.

;Irreducible Multiples:
: {{huge|U<sup>2</sup>}} A '''Biundecile''' is an angle of 65.45°, which is {{frac|2|11}} of the 360° ecliptic.
: {{huge|U<sup>3</sup>}} A '''Triundecile''' is an angle of 98.18°, which is {{frac|3|11}} of the 360° ecliptic.
: {{huge|U<sup>4</sup>}} A '''Quadundecile''' is an angle of 130.91°, which is {{frac|4|11}} of the 360° ecliptic.
: {{huge|U<sup>5</sup>}} A '''Quinundecile''' is an angle of 163.63°, which is {{frac|5|11}} of the 360° ecliptic.

<gallery>
Regular star polygon 11-2.svg|[[Hendecagram]] {11/2}
Regular star polygon 11-3.svg|[[Hendecagram]] {11/3}
Regular star polygon 11-4.svg|[[Hendecagram]] {11/4}
Regular star polygon 11-5.svg|[[Hendecagram]] {11/5}
</gallery>

===Semioctile===
A '''Semioctile''' or ''Sexdecile'' is an angle of 22.5°, which is {{frac|1|16}} of the 360° [[ecliptic]]. An [[Celestial orb|orb]] of ±0.75° is allowed.

A Semioctile is part of the square family. It is considered to be a version of the Semisquare, which triggers challenge. Its harmonic aspects are 45°, '''67.5°''', 90°, '''112.5°''', 135°, '''157.5°''' and 180°.  It was discovered by Uranian astrologers.

;Irreducible Multiples: 
: A '''Sesquioctile''' or ''Bisexdecile'' is an angle of 67.5°, which is {{frac|3|16}} of the 360° ecliptic.
: A '''Quinsemioctile''' or ''Quinsexdecile'' is an angle of 112.5°, which is {{frac|5|16}} of the 360° ecliptic.
: A '''Sepsemioctile''' or ''Sepsexdecile''  is an angle of 157.5°, which is {{frac|7|16}} of the 360° ecliptic.

<gallery>
Regular star polygon 16-3.svg|[[Hexadecagram]] {16/3}
Regular star polygon 16-5.svg|[[Hexadecagram]] {16/5}
Regular star polygon 16-7.svg|[[Hexadecagram]] {16/7}
</gallery>

==Declinations==
The '''Parallel''' and '''Contraparallel''' or ''Antiparallel'' are two other aspects which refer to degrees of [[declination]] above or below the [[Celestial Equator]]. They are not widely used by astrologers.

===Parallel and Contra Parallel===
A The same declination of two planets. The declination is the vertical angle between a planet and the celestial equator, in a southern (S) or northern (N) direction. Planets in a parallel relationship are compared to a conjunction. A '''contra parallel''' or "split" parallel occurs when two planets have the same number of degrees of declination, but in opposite hemispheres. For example, the moon might be at 20 degrees north latitude, while Pluto appears at 20 degrees south latitude. Its meaning is similar to that of the opposition.

==See also==
*[[Astrological symbols]]
*[[Conjunction (astronomy and astrology)|Conjunction]]
*[[Opposition (astronomy and astrology)|Opposition]]
*[[Cosmobiology]]
*[[Hamburg School of Astrology]]
*[[Quadrature (astronomy)]]

==References==
{{Reflist}}

==External links==
{{Commons category|Astrological aspects}}
*[http://www.skyscript.co.uk/aspects.html ''The Classical Origin & Traditional Use of Aspects''] Deborah Houlding
*[http://www.khaldea.com/ephemcenter.shtml  Online Ephemeris from Khaldea.com]—600BC to 2400AD—Calculated for [[Midnight]] [[GMT]]; also with an Aspectarian included for years 1900 to 2005
* [https://web.archive.org/web/20081212093141/http://posner.library.cmu.edu/Posner/books/book.cgi?call=520_K38PI ''Harmonices mundi''] ("The Harmony of the Worlds") in fulltext facsimile; [[Carnegie-Mellon University]]

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[[Category:Astrological aspects| ]]
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