1529 Oterma
|
Orbit of 1529 Oterma | |
| Discovery [1] | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Observatory |
| Discovery date | 26 January 1938 |
| Designations | |
| MPC designation | 1529 Oterma |
Named after |
Liisi Oterma (astronomer)[2] |
|
1938 BC · 1950 PV 1959 RD1 · A912 VO | |
| main-belt (outer) · Hilda [3] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 65.59 yr (23957 days) |
| Aphelion | 4.7970 AU (717.62 Gm) |
| Perihelion | 3.1919 AU (477.50 Gm) |
| 3.9945 AU (597.57 Gm) | |
| Eccentricity | 0.20091 |
| 7.98 yr (2916.0 d) | |
| 1.0168° | |
| 0° 7m 24.456s / day | |
| Inclination | 9.0567° |
| 100.60° | |
| 295.16° | |
| Earth MOID | 2.21241 AU (330.972 Gm) |
| Jupiter MOID | 0.809986 AU (121.1722 Gm) |
| Jupiter Tisserand parameter | 2.998 |
| Physical characteristics | |
| Dimensions |
60.16±1.11 km[4] 54.40 km (calculated)[3] |
| 15.75 h (0.656 d)[1][5] | |
|
0.047±0.002[4] 0.057 (assumed)[3] | |
|
B–V = 0.764 U–B = 0.386 Tholen = P P [3] | |
| 10.05 | |
|
| |
1529 Oterma, provisional designation 1938 BC, is a reddish Hildian asteroid from the outermost region of the asteroid belt, about 60 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland on 26 January 1938.[6]
The asteroid is a member of the Hilda family, a large group that orbits in resonance with the gas giant Jupiter and are thought to have originated from the Kuiper belt. As of 2015, it belongs to an exclusive group of 33 known asteroids with a spectral P-type in the Tholen classification scheme.[7] It orbits the Sun at a distance of 3.2–4.8 AU once every 7 years and 12 months (2,917 days). Its orbit shows an eccentricity of 0.20 and is tilted by 9 degrees to the plane of the ecliptic. It has a rotation period of 15¾ hours[5] and an albedo of 0.05, based on observation from the Japanese Akari satellite.[4]
It was named after Liisi Oterma (1915–2001), first Finnish female astronomer with a Ph.D. and discoverer of 54 asteroids at the Turku observatory between 1939 and 1953.[2]
References
- 1 2 3 "JPL Small-Body Database Browser: 1529 Oterma (1938 BC)" (2015-10-03 last obs.). Jet Propulsion Laboratory. Retrieved 27 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1529) Oterma. Springer Berlin Heidelberg. p. 121. ISBN 978-3-540-29925-7. Retrieved November 2015.
- 1 2 3 4 "LCDB Data for (1529) Oterma". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
- 1 2 3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved November 2015.
- 1 2 Dahlgren, M.; Lahulla, J. F.; Lagerkvist, C.-I.; Lagerros, J.; Mottola, S.; Erikson, A.; et al. (June 1998). "A Study of Hilda Asteroids. V. Lightcurves of 47 Hilda Asteroids". Icarus 133 (2): 247–285. Bibcode:1998Icar..133..247D. doi:10.1006/icar.1998.5919. Retrieved November 2015.
- ↑ "1529 Oterma (1938 BC)". Minor Planet Center. Retrieved November 2015.
- ↑ "JPL Small-Body Database – Query spectral type P (Tholen)". JPL Solar System Dynamics. Retrieved November 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 (1)-(5000) – Minor Planet Center
- 1529 Oterma at the JPL Small-Body Database
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