Editing (29075) 1950 DA (section)

== Possible Earth impact ==
{{mp|1950 DA}} has one of the best-determined asteroid orbital solutions. This is due to a combination of:<ref name="Giorgini-2002" />
* an orbit moderately [[Orbital inclination|inclined]] (12 degrees)<ref name=jpldata/> to the [[ecliptic plane]] (reducing in-plane [[Perturbation (astronomy)|perturbations]]);
* high-precision radar astrometry, which provides its distance and is complementary to the measurements of angular positions;
* a 74-year [[observation arc]];<ref name=jpldata/>
* an uncertainty region controlled by [[Orbital resonance|resonance]].<ref name="Giorgini-2002" />

Main-belt asteroid [[78 Diana]] (~125&nbsp;km in diameter) will pass about {{convert|0.003|AU|km mi|abbr=on|lk=on}} from {{mp|1950 DA}} on 5 August 2150.<ref name="Giorgini-2002" /> At that distance and size, Diana will perturb {{mp|1950 DA}} enough so that the change in trajectory is notable by 2880 (730 years later). In addition, over the intervening time, {{mp|1950 DA}}'s rotation will cause its orbit to slightly change as a result of the [[Yarkovsky effect]]. If {{mp|1950 DA}} continues on its present orbit, it may approach Earth on 16 March 2880, though the mean trajectory passes many millions of kilometres from Earth, so {{mp|1950 DA}} does not have a significant chance of impacting Earth. {{As of|2025|2}}, according to the latest solution dated 2 February 2025, the probability of an impact in 2880 is 1 in 2,600 (0.039%).<ref name=impact-risk-summary/>

The energy released by a collision with an object the size of {{mp|1950 DA}} would cause major effects on the [[climate]] and [[biosphere]], which would be devastating to [[human]] [[civilization]]. The discovery of the potential impact heightened interest in [[asteroid deflection strategies]].{{citation needed|date=April 2025}}