9549 Akplatonov
| Discovery [1] | |
|---|---|
| Discovered by | N. Chernykh L. Chernykh |
| Discovery site | CrAO – Nauchnyj |
| Discovery date | 19 September 1985 |
| Designations | |
| MPC designation | 9549 Akplatonov |
|
Named after
|
Aleksandr Platonov (computational mathematician)[2] |
| 1985 SM2 · 1981 TU1 1987 BP3 · 1992 JK3 |
|
| main-belt · Eunomia [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 34.13 yr (12,467 days) |
| Aphelion | 2.8892 AU |
| Perihelion | 2.3246 AU |
| 2.6069 AU | |
| Eccentricity | 0.1082 |
| 4.21 yr (1,537 days) | |
| 215.69° | |
| Inclination | 11.147° |
| 235.21° | |
| 306.04° | |
| Physical characteristics | |
| Dimensions | 8.238±0.173 km[4] 9.17 km (calculated)[3] |
| 2.8431±0.0004 h[5] 4.7045±0.0011 h[6] |
|
| 0.2854±0.0437[4] 0.21 (assumed)[3] |
|
| S [3] | |
| 12.5[1] | |
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9549 Akplatonov, provisional designation 1985 SM2, is a stony asteroid from the middle region of the asteroid belt, about 9 kilometers in diameter. It was discovered by the couple of Soviet–Russian astronomers, Nikolai and Lyudmila Chernykh, at the Crimean Astrophysical Observatory in Nauchnyj, Crimea, on 19 September 1985.[7]
The asteroid is a member of the Eunomia family, a large group of stony S-type asteroids and the most prominent family in the intermediate main-belt. It orbits the Sun at a distance of 2.3–2.9 AU once every 4 years and 3 months (1,537 days). Its orbit shows an eccentricity of 0.11 and is tilted by 11 degrees to the plane of the ecliptic. The asteroid's rotation period amounts to 2.8 and 4.7 hours, determined by two divergent observations made in 2009 and 2011.[5][6] According to the survey carried out by the Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the body has an albedo of 0.29, while the Collaborative Asteroid Lightcurve Link assumes a somewhat more moderate albedo of 0.21.[3][4]
The minor planet was named after Russian computational mathematician, Aleksandr Konstantinovich Platonov (b. 1931), researcher in orbital mechanics and robotics at the Keldysh Institute of Applied Mathematics since 1954. He is a pioneer in the theory and computation of satellite orbits and the control of spacecraft trajectories to the Moon and planets, as well as the motion of walking robots.[2]
References
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<references />, or <references group="..." />External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
- 9549 Akplatonov at the JPL Small-Body Database
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