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===Deep sky objects=== The [[Telescopium group]] is a group of twelve galaxies spanning three degrees in the northeastern part of the constellation, lying around 37 [[megaparsec]]s (120 million light-years) from our own galaxy.{{sfn|Streicher|2009|pp=168–71}} The brightest member is the elliptical galaxy [[NGC 6868]],{{sfn|Machacek|O'Sullivan|Randall|Jones|2010}} and to the west lies the [[spiral galaxy]] (or, perhaps, [[lenticular galaxy]]) [[NGC 6861]].{{sfn|Streicher|2009|pp=168–71}} These are the brightest members of two respective subgroups within the galaxy group, and are heading toward a merger in the future.{{sfn|Machacek|O'Sullivan|Randall|Jones|2010}} [[File:NGC 6584.jpg|thumb|right|The globular cluster [[NGC 6584]], as observed with the [[Hubble Space Telescope]]]] The [[globular cluster]] [[NGC 6584]] lies near [[Theta Arae]] and is 45,000 light-years distant from Earth.{{sfn|Streicher|2009|pp=168–71}} It is an [[Oosterhoff type I]] cluster, and contains at least 69 variable stars, most of which are [[RR Lyrae variable]]s.{{sfn|Toddy et al.|2012|pp=63–71}} The [[planetary nebula]] [[IC 4699]] is of 13th magnitude and lies midway between Alpha and Epsilon Telescopii.{{sfn|Streicher|2009|pp=168–71}} [[IC 4889]] is an [[elliptical galaxy]] of apparent magnitude 11.3, which can be found 2 degrees north-north-west of 5.3-magnitude [[Nu Telescopii]]. Observing it through a 40 cm telescope will reveal its central region and halo.{{sfn|Bakich|2010|p=277}} [[File:NGC 6845GALEX.jpg|thumb|left|The interacting galaxy system [[NGC 6845]], as observed with [[GALEX]]]] Occupying an area of around 4[[arcminute|']] × 2', [[NGC 6845]] is an interacting system of four galaxies—two spiral and two [[lenticular galaxy|lenticular galaxies]]—that is estimated to be around 88 megaparsecs (287 million light-years) distant.{{sfn|Gordon|2003}} SN 2008da was a [[type II supernova]] observed in one of the spiral galaxies, [[NGC 6845A]], in June 2008.{{sfn|Morrell|2008}} [[SN 1998bw]] was a luminous supernova observed in the spiral arm of the galaxy [[ESO184-G82]] in April 1998, and is notable in that it is highly likely to be the source of the [[gamma-ray burst]] [[GRB 980425]].{{efn|1=chances of signals being unrelated is around 1 in 10,000.{{sfn|galama|1998}}}} {{sfn|galama|1998}}
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