2571 Geisei
| Discovery [1] | |
|---|---|
| Discovered by | T. Seki |
| Discovery site | Geisei Observatory |
| Discovery date | 23 October 1981 |
| Designations | |
| MPC designation | 2571 Geisei |
Named after |
Geisei (discovery location)[2] |
|
1981 UC · 1931 TA4 1934 NV · 1944 OD 1961 XG · 1981 WR6 A911 UC | |
| main-belt · Flora family[3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 84.43 yr (30837 days) |
| Aphelion | 2.6615 AU (398.15 Gm) |
| Perihelion | 1.7962 AU (268.71 Gm) |
| 2.2288 AU (333.42 Gm) | |
| Eccentricity | 0.19412 |
| 3.33 yr (1215.4 d) | |
| 140.34° | |
| 0° 17m 46.32s / day | |
| Inclination | 2.8713° |
| 66.964° | |
| 284.42° | |
| Earth MOID | 0.791236 AU (118.3672 Gm) |
| Jupiter MOID | 2.75788 AU (412.573 Gm) |
| Jupiter Tisserand parameter | 3.617 |
| Physical characteristics | |
| Dimensions | 7.1 km[3] |
| 7.823 h (0.3260 d)[4] | |
| 0.24 [3] | |
| S [3] | |
| 13.0 | |
|
| |
2571 Geisei, provisional designation 1981 UC, is a smaller asteroid in the asteroid belt discovered on October 23, 1981 by astronomer Tsutomu Seki at Geisei Observatory in the Kōchi Prefecture of Japan.[5]
Belonging to the Flora family, the assumed S-type asteroid with a geometric albedo of 0.24 has a calculated diameter of 7 kilometers[3] and orbits the Sun at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,215 days).[1]
In September 2014, photometric observations of nine asteroids, including 2571 Geisei, at the Oakley Southern Sky Observatory in Coonabarabran, Australia, measured the asteroid's rotation period to be 7.823±0.005 hours with an amplitude of 0.50 in magnitude.[4]
It is named after the location of the discovering observatory, Geisei, about 35 kilometers east of the city of Kōchi, after which the asteroid 2396 Kochi, the first numbered discovery made by Tsutomu Seki at Geisei Observatory, is named.[2]
References
- 1 2 3 "JPL Small-Body Database Browser: 2571 Geisei (1981 UC)" (2015-02-26 last obs.). Jet Propulsion Laboratory. Retrieved 15 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (2571) Geisei. Springer Berlin Heidelberg. p. 210. ISBN 978-3-540-29925-7. Retrieved October 2015.
- 1 2 3 4 5 "LCDB Data for (2571) Geisei". Asteroid Lightcurve Database (LCDB). Retrieved October 2015.
- 1 2 Bohn, Lucas; Hibbler, Brianna; Stein, Gregory; Ditteon, Richard (April 2015). "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2014 September". The Minor Planet Bulletin 42 (2): 89–90. Bibcode:2015MPBu...42...89B. ISSN 1052-8091. Retrieved October 2015.
- ↑ "2571 Geisei (1981 UC)". Minor Planet Center. Retrieved October 2015.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- 2571 Geisei at the JPL Small-Body Database
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