9321 Alexkonopliv
| Discovery [1] | |
|---|---|
| Discovered by | T. Kojima |
| Discovery site | YGCO Chiyoda Station |
| Discovery date | 5 January 1989 |
| Designations | |
| MPC designation | 9321 Alexkonopliv |
Named after |
Alex Konopliv (astronomer)[2] |
|
1989 AK · 1977 VZ1 1977 XD · 1984 EK | |
| main-belt · (outer) [3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 14003 days (38.34 yr) |
| Aphelion | 3.9181 AU (586.14 Gm) |
| Perihelion | 2.2949 AU (343.31 Gm) |
| 3.1065 AU (464.73 Gm) | |
| Eccentricity | 0.26126 |
| 5.48 yr (1999.9 d) | |
| 347.45° | |
| 0° 10m 48.036s / day | |
| Inclination | 4.3176° |
| 89.262° | |
| 357.73° | |
| Earth MOID | 1.31073 AU (196.082 Gm) |
| Jupiter MOID | 1.33113 AU (199.134 Gm) |
| Jupiter Tisserand parameter | 3.162 |
| Physical characteristics | |
| Dimensions | 11.48 km (calculated)[3] |
| 3.4268±0.001 h[4] | |
| 0.057 (assumed)[3] | |
| C [3] | |
| 13.0[1] | |
|
| |
9321 Alexkonopliv, provisional designation 1989 AK, is a carbonaceous asteroid from the outer region of the asteroid belt, about 11 kilometers in diameter. It was discovered by Japanese astronomer Takuo Kojima at the YGCO Chiyoda Station, Japan, on 5 January 1989.[5]
The dark C-type asteroid orbits the Sun at a distance of 2.3–3.9 AU once every 5 years and 6 months (2,000 days). Its orbit shows an eccentricity of 0.26 and is tilted by 4 degrees to the plane of the ecliptic. It has a rotation period of 3.4 hours[4] and an albedo of 0.06, as assumed by the Collaborative Asteroid Lightcurve Link.[3]
It is named for Alex Konopliv (b. 1960), a scientist at the Jet Propulsion Laboratory and an internationally recognized authority on the determination of gravity fields for Solar System objects tracked by satellites in Earth's orbit. His gravity fields for Mars have supported several missions.[2]
References
- 1 2 3 "JPL Small-Body Database Browser: 9321 Alexkonopliv (1989 AK)" (2015-11-21 last obs.). Jet Propulsion Laboratory. Retrieved 13 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (9321) Alexkonopliv. Springer Berlin Heidelberg. p. 682. ISBN 978-3-540-29925-7. Retrieved December 2015.
- 1 2 3 4 5 "LCDB Data for (9321) Alexkonopliv". Asteroid Lightcurve Database (LCDB). Retrieved December 2015.
- 1 2 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved December 2015.
- ↑ "9321 Alexkonopliv (1989 AK)". Minor Planet Center. Retrieved December 2015.
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
- 9321 Alexkonopliv at the JPL Small-Body Database
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