Astronomy:45737 Benita
| Discovery [1] | |
|---|---|
| Discovered by | B. A. Segal |
| Discovery site | Jupiter Obs. |
| Discovery date | 22 April 2000 |
| Designations | |
| (45737) Benita | |
| Named after | Benita Segal [2] (discoverer's wife) |
| 2000 HB | |
| Minor planet category | main-belt · (outer) background [3] |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 19.41 yr (7,091 days) |
| |{{{apsis}}}|helion}} | 3.3441 AU |
| |{{{apsis}}}|helion}} | 3.0485 AU |
| 3.1963 AU | |
| Eccentricity | 0.0462 |
| Orbital period | 5.71 yr (2,087 days) |
| Mean anomaly | 245.14° |
| Mean motion | 0° 10m 21s / day |
| Inclination | 10.197° |
| Longitude of ascending node | 181.43° |
| 124.47° | |
| Physical characteristics | |
| Dimensions | 5.121±1.701 km[4] |
| Geometric albedo | 0.294±0.080[4] |
| Absolute magnitude (H) | 13.6[1] |
45737 Benita (provisional designation 2000 HB) is a bright asteroid located in the outer regions of the asteroid belt. It has an estimated diameter of approximately 5 kilometers. The asteroid was discovered on April 22, 2000, by Bruce Segal, an American amateur astronomer, at the Florida Atlantic University's Jupiter Observatory (837) in Boca Raton, Florida.[1][5]
Orbit and classification
Benita is a non-family asteroid that belongs to the background population of the main belt.[3] It orbits the Sun in the outer region of the asteroid belt, at a distance of 3.0–3.3 AU. It completes one orbit around the Sun every 5 years and 9 months (2,087 days) with a semi-major axis of approximately 3.20 AU. The orbit of Benita is slightly eccentric, with an eccentricity of 0.05, and it is inclined at an angle of 10° with respect to the ecliptic plane.[1] The body's observation arc begins with a precovery taken at Lincoln Laboratory's ETS, New Mexico, on 30 October 1997.[5]
Physical characteristics
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Benita measures 5.121 kilometers in diameter and its surface has an albedo of 0.294.[4]
Rotation period
As of 2017, no rotational lightcurve of Benita has been obtained from photometric observations. The body's rotation period, poles and shape remain unknown.[6]
Naming
The discoverer named this minor planet after his wife, Benita Segal (born 1964), a major supporter of the observatory.[2] The official naming citation was published by the Minor Planet Center on 20 November 2002 (M.P.C. 47170).[7]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 "JPL Small-Body Database Browser: 45737 Benita (2000 HB)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2045737.
- ↑ 2.0 2.1 Schmadel, Lutz D. (2007). "(45737) Benita". Dictionary of Minor Planet Names – (45737) Benita. Springer Berlin Heidelberg. p. 895. doi:10.1007/978-3-540-29925-7_10039. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 "Asteroid 45737 Benita – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=45737.
- ↑ 4.0 4.1 4.2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J. et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal 741 (2): 20. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 30 November 2017.
- ↑ 5.0 5.1 "45737 Benita (2000 HB)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=45737.
- ↑ "LCDB Data for (45737) Benita". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=45737%7CBenita.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.
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 (45001)-(50000) – Minor Planet Center
- 45737 Benita at AstDyS-2, Asteroids—Dynamic Site
- 45737 Benita at the JPL Small-Body Database
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