(21031) 1989 TO15
minor planet
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Summary
(21031) 1989 TO15 is an asteroid[1]. (21031) 1989 TO15 has Wikipedia articles in 5 language editions, a strong signal of global cultural recognition.[2]
Key Facts
- Discoverer or inventor: Henri Debehogne[3]
- Site of astronomical discovery: La Silla Observatory[4]
- Follows: (21030) 1989 TZ11[5]
- Followed by: (21032) 1989 TN16[6]
- Minor planet group: asteroid belt[7]
- Parent astronomical body: Sun[8]
- Provisional designation: 1989 TO15[9], 1994 CW2[10]
- Time of discovery or invention: October 3, 1989[11]
- Orbital eccentricity: 0.23[12], 0.2327665[13], 0.2316439580600052[14]
- Absolute magnitude: 15.7[15], 15.8[16]
- Orbital inclination: 2.58154 degree[17], 2.581028738778244 degree[18]
- Orbital period: 3.51 years[19], 1282.265133712186 day[20]
- Longitude of ascending node: 199.44962 degree[21], 199.2624362829965 degree[22]
- Semi-major axis of an orbit: 2.3098068 astronomical unit[23], 2.309863259473505 astronomical unit[24]
- Apoapsis: 2.847 astronomical unit[25], 2.844929127475332 astronomical unit[26]
- Periapsis: 1.7721611 astronomical unit[27], 1.774797391471678 astronomical unit[28]
- Argument of periapsis: 221.11846 degree[29], 221.4770318013461 degree[30]
- Mean anomaly: 6.88269 degree[31], 72.46403295186629 degree[32]
- Diameter: 1.794 km[33]
- Albedo: 0.346[34]
- Epoch: November 21, 2025[35]
- Time of periapsis: 2460742.3941586046 Julian day[36]
Why It Matters
(21031) 1989 TO15 is known by 4 alternative names across languages and contexts.[37]