281 Lucretia
|
A three-dimensional model of 281 Lucretia based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 31 October 1888 |
| Designations | |
Named after | Caroline Lucretia Herschel |
|
A906 FD; 1948 EK; 1984 JX | |
| Main belt (Flora family) | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 126.00 yr (46020 d) |
| Aphelion | 2.47750 AU (370.629 Gm) |
| Perihelion | 1.89821 AU (283.968 Gm) |
| 2.18786 AU (327.299 Gm) | |
| Eccentricity | 0.13239 |
| 3.24 yr (1182.0 d) | |
Average orbital speed | 20.14 km/s |
| 161.880° | |
| 0° 18m 16.423s / day | |
| Inclination | 5.30407° |
| 31.4134° | |
| 16.7540° | |
| Earth MOID | 0.906973 AU (135.6812 Gm) |
| Jupiter MOID | 2.88103 AU (430.996 Gm) |
| Jupiter Tisserand parameter | 3.658 |
| Physical characteristics | |
| Dimensions |
11.76±0.9 km [1] 12 km [2] |
| Mass | ~2×1015 (estimate) |
Mean density | ~2.7 g/cm³ (estimate) [3] |
Equatorial surface gravity | ~0.004 m/s² (estimate) |
Equatorial escape velocity | ~0.007 km/s (estimate) |
| 0.181 d (4.348 h)[4] | |
|
0.1987±0.035 [1] 0.199 [2] | |
| Temperature |
~183 K max: 277 K (+4°C) |
| S [5] | |
| 12.02 | |
|
| |
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281 Lucretia is an asteroid belonging to the Flora family in the Main Belt.[4]
It was discovered by Johann Palisa on October 31, 1888 in Vienna. It is named for the middle name of Caroline Herschel, one of the first female astronomers.
References
- 1 2 3 "281 Lucretia". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
- 1 2 Supplemental IRAS Minor Planet Survey Archived June 23, 2006, at the Wayback Machine.
- ↑ G. A. Krasinsky; et al. (2002). "Hidden Mass in the Asteroid Belt". Icarus. 158: 98. Bibcode:2002Icar..158...98K. doi:10.1006/icar.2002.6837.
- 1 2 Kryszczynska, A.; et al. (October 2012). "Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region". Astronomy & Astrophysics. 546: 51. Bibcode:2012A&A...546A..72K. doi:10.1051/0004-6361/201219199. A72.
- ↑ "Asteroid Taxonomy". Planetary Science Institute. Retrieved 2016-02-27.
External links
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