2020 FA31 is a distant trans-Neptunian object that was discovered 97.2 AU (14.54 billion km) from the Sun by Scott Sheppard, David Tholen, and Chad Trujillo on 24 March 2020.[1] Announced on 14 February 2021, it is one of the most distant observable known objects in the Solar System.[4]
![]() Orbit of 2020 FA31 | |
Discovery [1][2] | |
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Discovered by | |
Discovery site | Mauna Kea Obs. |
Discovery date | 24 March 2020 (first imaged) |
Designations | |
MPC designation | 2020 FA31 |
Minor planet category | |
Orbital characteristics[4] | |
Epoch 9 June 2020 (JD 2459009.5) | |
Uncertainty parameter 9 | |
Observation arc | 0.82 yr (301 days) |
Aphelion | 102.447±47.846 AU |
Perihelion | 39.457±9.608 AU |
Semi-major axis | 70.952±33.137 AU |
Eccentricity | 0.44389±0.39513 |
Orbital period (sidereal) | 597.66±418.70 yr |
Mean anomaly | 132.132°±320.990° |
Mean motion | 0° 0m 5.937s / day |
Inclination | 19.554°±0.030° |
Longitude of ascending node | 135.974°±0.152° |
Argument of perihelion | 260.344°±137.100° |
Physical characteristics | |
Apparent magnitude | 25.0[1] |
Absolute magnitude (H) | |
Small Solar System bodies | |||||||
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Minor planets |
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Comets |
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Other |
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