1983 Bok
| Discovery [1] | |
|---|---|
| Discovered by | E. Roemer |
| Discovery site | Steward Observatory |
| Discovery date | 9 June 1975 |
| Designations | |
| MPC designation | 1983 Bok |
Named after |
Bart Bok and Priscilla Fairfield Bok[2] |
|
1975 LB · 1950 RV 1963 UJ | |
| main-belt · (middle) [3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 65.51 yr (23926 days) |
| Aphelion | 2.8796 AU (430.78 Gm) |
| Perihelion | 2.3659 AU (353.93 Gm) |
| 2.6227 AU (392.35 Gm) | |
| Eccentricity | 0.097930 |
| 4.25 yr (1551.4 d) | |
| 122.15° | |
| 0° 13m 55.38s / day | |
| Inclination | 9.4082° |
| 23.581° | |
| 345.83° | |
| Earth MOID | 1.36528 AU (204.243 Gm) |
| Jupiter MOID | 2.57724 AU (385.550 Gm) |
| Jupiter Tisserand parameter | 3.378 |
| Physical characteristics | |
| Dimensions |
15±3 km[4] 10.56 km (calculated)[3] |
| 10.70±0.01 h,[4] 10.70 h (0.446 d)r2[1] | |
|
0.06±0.02[4] 0.10 (assumed)[3] | |
| S [3] | |
| 13.1[1] | |
|
| |
1983 Bok, provisional designation 1975 LB, is an asteroid from the middle region of the asteroid belt, discovered by American astronomer Elizabeth Roemer at the U.S. Steward Observatory of the University of Arizona, Tucson, on 9 June 1975.[5]
The presumably stony asteroid measures about 15 kilometers in diameter and orbits the Sun at a distance of 2.4–2.9 AU once every 4.24 years (1,550 days). It has a rotation period of 10.7 hours and an albedo of 0.06,[4] while the Collaborative Asteroid Lightcurve Link (CALL) assumes the body to have a S-type spectrum with a somewhat higher albedo of 0.10 and a consequently shorter diameter of 11 kilometers.[3]
It is named after the Duch-born couple and astronomers Bart Bok and Priscilla Fairfield Bok, who studied the structure of the southern Milky Way and fostered astronomy in the Southern Hemisphere. It was the first minor planet discovered with the 90-inch Bok Telescope to be numbered. The asteroid was discovered at far southern declination.[2][nb 1]
Notes
- ↑ Lutz Schmadel's full naming citation for "1983 Bok" reads: "This is the first minor planet discovered with the 229-cm telescope of the Stewart Observatory to be numbered. It is named for the Boks in recognition of their role in bringing the large reflector of the Steward Observatory into operation and for their support of the astrometric work on comets, minor planets, and satellites. This minor planet was at far southern declination at discovery (and observations at Wellington were important in obtaining a reliable orbit). This is also in fitting association with the Boks, who have devoted much effort to study of the structure of the southern Milky Way and to encouragement of astronomy in the Southern Hemisphere.(M 4158) Name proposed by E. Roemer and A. C. Gilmore."
References
- 1 2 3 4 "JPL Small-Body Database Browser: 1983 Bok (1975 LB)" (2015-11-02 last obs.). Jet Propulsion Laboratory. Retrieved 18 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1983) Bok. Springer Berlin Heidelberg. p. 160. ISBN 978-3-540-29925-7. Retrieved October 2015.
- 1 2 3 4 5 "LCDB Data for (1983) Bok". Asteroid Lightcurve Database (LCDB). Retrieved December 2015.
- 1 2 3 4 Casalnuovo, Giovanni Battitsa (April 2015). "Lightcurve Analysis for Seven Main-belt Asteroids". The Minor Planet Bulletin 42 (2): 139–141. Bibcode:2015MPBu...42..139C. ISSN 1052-8091. Retrieved December 2015.
- ↑ "1983 Bok (1975 LB)". Minor Planet Center. Retrieved October 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
- 1983 Bok at the JPL Small-Body Database
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