Astronomy:937 Bethgea
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Short description: Main-belt asteroid
| Discovery | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg |
| Discovery date | 12 September 1920 |
| Designations | |
| (937) Bethgea | |
| Pronunciation | /ˈbɛθɡiə/ |
| 1920 HO; A916 GA; 1946 GC; 1959 EQ | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 99.97 yr (36513 days) |
| |{{{apsis}}}|helion}} | 2.7160 astronomical unit|AU (406.31 Gm) |
| |{{{apsis}}}|helion}} | 1.7473 AU (261.39 Gm) |
| 2.2317 AU (333.86 Gm) | |
| Eccentricity | 0.21703 |
| Orbital period | 3.33 yr (1217.7 d) |
| Mean anomaly | 296.008° |
| Mean motion | 0° 17m 44.304s / day |
| Inclination | 3.6963° |
| Longitude of ascending node | 243.574° |
| 72.509° | |
| Physical characteristics | |
| Rotation period | 8.356 h,[2] 7.5390 h (0.31413 d)[1] |
| Absolute magnitude (H) | 11.83 |
937 Bethgea is a background asteroid from the inner region of the asteroid belt. It was discovered on 12 September 1920 by German astronomer Karl Wilhelm Reinmuth, from Heidelberg.
Photometric observations of this asteroid made at the Torino Observatory in Italy during 1990–1991 were used to determine a synodic rotation period of 8.356 ± 0.006 hours.[2][3]
References
- ↑ 1.0 1.1 Yeomans, Donald K., "937 Bethgea", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=937, retrieved 2 May 2016.
- ↑ 2.0 2.1 di Martino, M. et al. (February 1994), "Lightcurves and rotational periods of nine main belt asteroids", Icarus 107 (2): pp. 269–275, doi:10.1006/icar.1994.1022, Bibcode: 1994Icar..107..269D.
- ↑ "Asteroid Lightcurve Parameters". http://www.psi.edu/pds/archive/lc.html.
External links
- 937 Bethgea at AstDyS-2, Asteroids—Dynamic Site
- 937 Bethgea at the JPL Small-Body Database
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