57 Mnemosyne
Discovery | |
---|---|
Discovered by | Karl Theodor Robert Luther |
Discovery date | 22 September 1859 |
Designations | |
MPC designation | (57) Mnemosyne |
Named after | Mnemosyne |
Main belt | |
Orbital characteristics | |
Epoch December 31, 2006 (JD 2454100.5) | |
Aphelion | 526.785 Gm (3.521 AU) |
Perihelion | 415.379 Gm (2.777 AU) |
471.082 Gm (3.149 AU) | |
Eccentricity | 0.118 |
2041.056 d (5.59 a) | |
68.001° | |
Inclination | 15.200° |
199.337° | |
212.848° | |
Physical characteristics | |
Dimensions | ±4.46 km 113.01[1] |
Mass | ±0.24)×1019 kg (1.26[1] |
Mean density | ±3.73 g/cm3 16.62[1] |
±0.03 h 12.06[2] | |
0.215[3] | |
S | |
7.03 | |
|
57 Mnemosyne (/nɪˈmɒsɪniː/ ni-MOS-i-nee) is a large main belt asteroid. It is an S-type asteroid in composition. It was discovered by Robert Luther on 22 September 1859 from Düsseldorf. Its name was chosen by Martin Hoek, director of the Utrecht Observatory, in reference to Mnemosyne, a Titaness in Greek mythology.[4] The orbital period of this asteroid is close to a 2:1 commensurability with Jupiter, which made it useful for perturbation measurements to derive the mass of the planet.[5][6]
Photometry measurements made at the Oakley Observatory during 2006 produced a lightcurve with a rotation period of ±0.03 h and an 12.06amplitude of ±0.01 in magnitude. 0.14[2] It has an estimated span of ±4.46 km and a mass of 113.01±0.24)×1019 kg. (1.26[1]
References
- 1 2 3 4 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- 1 2 Ditteon, Richard; Hawkins, Scot (September 2007), "Asteroid Lightcurve Analysis at the Oakley Observatory - October-November 2006", The Minor Planet Bulletin (ISSN 1052-8091). Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers, 34 (3): 59−64, Bibcode:2007MPBu...34...59D.
- ↑ Asteroid Data Sets Archived 2010-01-17 at WebCite
- ↑ Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names. Springer Science & Business Media. p. 20. ISBN 978-3-540-00238-3.
- ↑ Hill, G. W. (1873), "On the Derivation of the Mass of Jupiter from the Motion of Certain Asteroids", Memoirs of the American Academy of Arts and Sciences, 9 (2): 417−420, JSTOR 25058008.
- ↑ Strand, K. A. (January 1970), "U.S. Naval Observatory, Washington, D.C. Report 1968-1969.", Bulletin of the Astronomical Society, 2: 144−149, Bibcode:1970BAAS....2..144S.
External links