1651 Behrens
| Discovery [1] | |
|---|---|
| Discovered by | M. Laugier |
| Discovery site | Nice Observatory |
| Discovery date | 23 April 1936 |
| Designations | |
| MPC designation | 1651 Behrens |
Named after |
Johann Behrens (pastor, astronomer)[2] |
|
1936 HD · 1939 EJ 1940 QD · 1944 YA 1947 WA · 1950 TB4 1952 FF · 1952 HB 1952 KG · 1958 BC 1961 AB · 1963 UQ | |
| main-belt · Flora [3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 79.89 yr (29179 days) |
| Aphelion | 2.3241 AU (347.68 Gm) |
| Perihelion | 2.0354 AU (304.49 Gm) |
| 2.1798 AU (326.09 Gm) | |
| Eccentricity | 0.066226 |
| 3.22 yr (1175.5 d) | |
| 323.85° | |
| 0° 18m 22.536s / day | |
| Inclination | 5.0741° |
| 187.52° | |
| 339.48° | |
| Earth MOID | 1.04214 AU (155.902 Gm) |
| Jupiter MOID | 2.6449 AU (395.67 Gm) |
| Jupiter Tisserand parameter | 3.674 |
| Physical characteristics | |
| Dimensions |
9.264±0.080 km[4] 10.31 km (calculated)[3] |
| 34.34 h (1.431 d)[1][5] | |
|
0.3003±0.0264[4] 0.24 (assumed)[3] | |
| S [3] | |
| 12.1 | |
|
| |
1651 Behrens, provisional designation 1936 HD, is a stony asteroid and relatively slow rotator from the inner regions of the asteroid belt, about 10 kilometers in diameter. It was discovered by French female astronomer Marguerite Laugier at Nice Observatory in south-east France on 23 April 1936.[6] It was independently discovered by Karl Reinmuth at Heidelberg, Germany in the following month.[2]
The S-type asteroid belongs to the Flora family, a large group of stony asteroids in the inner main-belt. It orbits the Sun at a distance of 2.0–2.3 AU once every 3.22 years (1,175 days). Its orbit shows an eccentricity of 0.07 and is tilted by 5 degrees to the plane of the ecliptic.[1] It has a rotation period of 34.34 hours[5] and an albedo of 0.30 and 0.24, as measured by the NEOWISE mission and estimated by the Lightcurve Database project, respectively.[3][4]
According to a proposal by Otto Kippes, who verified the discovery, the asteroid was named after Johann Gerhard Behrens (1889–1978), German amateur astronomer and pastor at Detern, in lower Saxony, He was known for his orbit computations on comets and minor planets.[2]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 1651 Behrens (1936 HD)" (2015-10-17 last obs.). Jet Propulsion Laboratory. Retrieved 22 April 2016.
- 1 2 3 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1651) Behrens. Springer Berlin Heidelberg. p. 131. ISBN 978-3-540-29925-7. Retrieved November 2015.
- 1 2 3 4 5 "LCDB Data for (1651) Behrens". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
- 1 2 3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved November 2015.
- 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1651) Behrens". Geneva Observatory. Retrieved November 2015.
- ↑ "1651 Behrens (1936 HD)". Minor Planet Center. 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
- 1651 Behrens at the JPL Small-Body Database
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