Astronomy:281 Lucretia
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Short description: Main-belt asteroid
.png) A three-dimensional model of 281 Lucretia based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 31 October 1888 |
| Designations | |
| (281) Lucretia | |
| Pronunciation | /luːˈkriːʃə/ |
| Named after | Caroline Lucretia Herschel |
| A888 UC, 1906 FD 1948 EK, 1984 JX | |
| Minor planet category | Main belt (Flora family) |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 126.00 yr (46020 d) |
| |{{{apsis}}}|helion}} | 2.47750 astronomical unit|AU (370.629 Gm) |
| |{{{apsis}}}|helion}} | 1.89821 AU (283.968 Gm) |
| 2.18786 AU (327.299 Gm) | |
| Eccentricity | 0.13239 |
| Orbital period | 3.24 yr (1182.0 d) |
| Mean anomaly | 161.880° |
| Mean motion | 0° 18m 16.423s / day |
| Inclination | 5.30407° |
| Longitude of ascending node | 31.4134° |
| 16.7540° | |
| Physical characteristics | |
| Dimensions | 11.76±0.9 km [1] 12 km [2] |
| Mean density | ~2.7 g/cm3[3] |
| Rotation period | 0.181 d (4.348 h)[4] |
| Geometric albedo | 0.1987±0.035 [1] 0.199 [2] |
| S [5] | |
| Absolute magnitude (H) | 12.02 |
Lucretia (minor planet designation: 281 Lucretia) is an asteroid belonging to the Flora family in the Main Belt.[4] It was discovered by Austrian astronomer Johann Palisa on 31 October 1888 in Vienna, and is named after the middle name of Caroline Herschel, one of the first female astronomers.[6] Light curves of this asteroid show a synodic rotation period of 4.349±0.001 h with an amplitude of 0.3–0.4 magnitude. The spin axis appears nearly perpendicular to the ecliptic.[4]
References
- ↑ 1.0 1.1 1.2 "281 Lucretia". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=281;cad=1.
- ↑ 2.0 2.1 Supplemental IRAS Minor Planet Survey
- ↑ Krasinsky, G. A. (2002). "Hidden Mass in the Asteroid Belt". Icarus 158 (1): 98–105. doi:10.1006/icar.2002.6837. Bibcode: 2002Icar..158...98K.
- ↑ 4.0 4.1 4.2 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. doi:10.1051/0004-6361/201219199. A72. Bibcode: 2012A&A...546A..72K.
- ↑ "Asteroid Taxonomy". Planetary Science Institute. http://www.psi.edu//pds/resource/taxonomy.html.
- ↑ Schmadel, Lutz D. (2007). "(281) Lucretia". Dictionary of Minor Planet Names – (281) Lucretia. Springer Berlin Heidelberg. p. 38. doi:10.1007/978-3-540-29925-7_282. ISBN 978-3-540-00238-3.
External links
- 281 Lucretia at AstDyS-2, Asteroids—Dynamic Site
- 281 Lucretia at the JPL Small-Body Database
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