2010 BK118
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Discoverydate
- January 2010 (WISE)
- 19 September 2010 (LINEAR)
2010 BK118
| Discovery[1][2] | |
|---|---|
| Discovered by | WISE LINEAR (704) |
| Discovery date |
|
| Designations | |
| 2010 BK118 | |
| Centaur (DES)[3] | |
| Orbital characteristics[4] | |
| Epoch 21 November 2025 (JD 2461000.5) | |
| Uncertainty parameter 1 | |
| Observation arc | 2282 days (6.25 yr) |
| Aphelion | |
| Perihelion | 6.1357 AU (917.89 Gm) (q) |
| |
| Eccentricity | 0.98637 (e) |
| |
| 0.51099° (M) | |
| 0.00010319°/day (n) | |
| Inclination | 143.882° (i) |
| 176.00° (Ω) | |
| 179.26° (ω) | |
| Earth MOID | 5.1306 AU (767.53 Gm) |
| Jupiter MOID | 1.16809 AU (174.744 Gm) |
| Physical characteristics | |
| Dimensions |
|
| 21[6] | |
| 10.3[4] | |
2010 BK118 (also written 2010 BK118) is a centaur roughly 20–60 km in diameter. It is on a retrograde cometary orbit. It has a barycentric semi-major axis (average distance from the Sun) of ~450 AU.[a]
2010 BK118 came to perihelion in April 2012 at a distance of 6.1 AU from the Sun (outside the orbit of Jupiter).[4] It has a Jupiter-MOID of 1.2 AU.[4] As of 2026[update], it is 27 AU from the Sun.[6]
It will not be 50 AU from the Sun until 2043. After leaving the planetary region of the Solar System, 2010 BK118 will have a barycentric aphelion of 894 AU with an orbital period of ~8000 years.
| Orbital evolution | |||||||
| Epoch | Barycentric Aphelion (Q) (AU) | Orbital period yr | |||||
|---|---|---|---|---|---|---|---|
| 1950 | 746 | 7300 | |||||
| 2050 | 792 | 8000 | |||||
