1580 Betulia
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A three-dimensional model of 1580 Betulia based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | Johnson, E. L. |
| Discovery site | Johannesburg (UO) |
| Discovery date | 22 May 1950 |
| Designations | |
| MPC designation | 1580 |
| 1950 KA | |
Amor  | |
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 65.14 yr (23791 days) |
| Aphelion | 3.268385618522644 AU (488.94352915749 Gm) |
| Perihelion | 1.126105271676191 AU (168.46295082680 Gm) |
| 2.197245445099 AU (328.7032399921 Gm) | |
| Eccentricity | 0.4874922716586910 |
| 3.26 yr (1189.6 d) | |
| 70.89179627702830° | |
| 0° 18m 9.403s / day | |
| Inclination | 52.08153892643610° |
| 62.30238028514640° | |
| 159.4701716772080° | |
| Earth MOID | 0.135068 AU (20.2059 Gm) |
| Jupiter MOID | 1.85748 AU (277.875 Gm) |
| Jupiter Tisserand parameter | 3.065 |
| Physical characteristics | |
| Dimensions | 4.57 km [2] |
Mean radius | 2.9 km |
| 6.13836 hr,[3] 6.1324 h (0.25552 d)[1] | |
Pole ecliptic latitude | 22° [3] |
Pole ecliptic longitude | 136° [3] |
| 0.077,[2] 0.08[1] | |
| 14.53,[2] 14.8[1] | |
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1580 Betulia (provisional designation: 1950 KA) is an Amor asteroid discovered on May 22, 1950, by Ernest Leonard Johnson at the Union Observatory, Johannesburg, South Africa. Betulia's shape has been accurately determined: at its widest point, the asteroid is 6.59 ± .66 km wide; however, its effective diameter is 5.39 ± .54 km.[3]
The name honours Betulia Toro, wife of the astronomer Samuel Herrick. Herrick had studied the asteroid's orbit, and requested the name, along with that of 1685 Toro.[4][5]
References
- 1 2 3 4 "1580 Betulia (1950 KA)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 25 April 2016.
- 1 2 3 "1580 Betulia". European Asteroid Research Node.
- 1 2 3 4 Christopher, Magri; et al. (2007). "Radar observations and a physical model of Asteroid 1580 Betulia". Icarus 186 (1): 152–177. Bibcode:2007Icar..186..152M. doi:10.1016/j.icarus.2006.08.004.
- ↑ Lutz D. Schmadel, Dictionary of Minor Planet Names: Addendum to Fifth Edition: 2006 - 2008.
- ↑ University of California, Samuel Herrick, Engineering; Astronomy: Los Angeles
Further reading
- Harris, Alan W.; Mueller, Michael; Delbó, Marco; Busc, Schelte J. (December 2005). "The surface properties of small asteroids: Peculiar Betulia - A case study". Icarus 179 (1): 95–108. Bibcode:2005Icar..179...95H. doi:10.1016/j.icarus.2005.05.010.
- Lebofsky, L. A.; Veeder, G. J.; Lebofsky, M. J.; Matson, D. L. (September 1978). "Visual and radiometric photometry of 1580 Betulia". Icarus 35 (3): 336–343. Bibcode:1978Icar...35..336L. doi:10.1016/0019-1035(78)90086-6.
External links
- IAUC 1268 - Initial discovery
- JPL Small-Body Database Browser on 1580 Betulia
- 1580 Betulia at the JPL Small-Body Database
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