57 Mnemosyne

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57 Mnemosyne
Orbital characteristics 1
Orbit type Main belt
Semimajor axis 3.150 AU
Perihelion distance 2.776 AU
Aphelion distance 3.523 AU
Orbital period 5.59 years
Inclination 15.20°
Eccentricity 0.119
Physical characteristics 1
Diameter 112.6 km
Rotation period 3 12.463 hours
Spectral class S
Abs. magnitude 7.03
Albedo 4 0.215
History 2
Discoverer R. Luther, 1859

57 Mnemosyne (ni-mos'-i-nee) is a large Main belt asteroid. It is a S-type asteroid.

It was discovered by R. Luther on September 22, 1859. It is named after Mnemosyne, a Titaness in Greek mythology.

[edit] Aspects

Stationary,
retrograde
Opposition Distance to
Earth (AU)
Maximum
brightness (mag)
Stationary,
prograde
Conjunction
to Sun
14 March 2005 23 September 2005 1.79311 10.9 5 November 2005 23 December 2005
27 June 2006 18 December 2006 2.14220 11.6 11 February 2007 28 March 2007
23 September 2007 27 February 2008 2.48467 11.9 19 April 2008 13 June 2008
21 November 2008 27 April 2009 2.45459 12.1 21 June 2009 16 August 2009
25 January 2010 19 July 2010 1.96963 11.2 10 September 2010 22 October 2010
24 April 2011 1 November 2011 1.88579 11.2 19 December 2011 5 February 2012
7 August 2012 18 January 2013 2.31289 11.7 13 March 2013 30 April 2013
18 October 2013 23 March 2014 2.53013 12.1 14 May 2014 12 July 2014
16 December 2014 26 May 2015 2.29391 11.9 22 July 2015 10 September 2015
28 February 2016 4 September 2016 1.80805 10.7 19 October 2016 3 December 2016
8 June 2017 4 December 2017 2.06481 11.5 27 January 2018 14 March 2018
10 September 2018 16 February 2019 2.44546 11.7 9 April 2019 1 June 2019
12 November 2019 16 April 2020 2.49528 12.2 9 June 2020 5 August 2020


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Small Solar System bodies
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For other objects and regions, see: asteroid groups and families, binary asteroids, asteroid moons and the Solar system
For a complete listing, see: List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.