51 Nemausa

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51 Nemausa
Orbital characteristics 1
Orbit type Main belt
Semimajor axis 2.365 AU
Perihelion distance 2.207 AU
Aphelion distance 2.523 AU
Orbital period 3.64 years
Inclination 9.97°
Eccentricity 0.067
Physical characteristics 1
Diameter 147.9 km
Rotation period 3 7.783 hours
Spectral class G
Abs. magnitude 7.35
Albedo 4 0.093
History 2
Discoverer A. Laurent, 1858

51 Nemausa (nə-mawz'-ə (key)) is a large Main belt asteroid similar to 1 Ceres in composition.

It was discovered in the city of Nîmes, France, after which it was named (in its Latin name). The discoverer was a certain "A. Laurent" who never made any more asteroid discoveries and about whom not much seems to be known.

The asteroid was discovered using the private observatory at the house formerly occupied by Benjamin Valz, who left to become the new director of the Marseille Observatory. He entrusted his former observatory to A. Laurent, who later found the asteroid. The house, at 32 rue Nationale in Nîmes, has a plaque commemorating the discovery. [1]

A small satellite has been suggested based on lightcurve data. [2]

[edit] Aspects

Stationary,
retrograde
Opposition Distance to
Earth (AU)
Maximum
brightness (mag)
Stationary,
prograde
Conjunction
to Sun
1 February 2005 19 August 2005 1.52155 10.5 4 October 2005 20 November 2005
1 June 2006 30 December 2006 1.25422 10.0 12 February 2007 24 March 2007
7 November 2007 30 May 2008 1.43026 10.6 18 July 2008 1 September 2008
14 March 2009 2 October 2009 1.47903 10.6 15 November 2009 3 January 2010
25 July 2010 4 March 2011 1.22075 9.9 11 April 2011 26 May 2011
30 December 2011 15 July 2012 1.50624 10.5 2 September 2012 16 October 2012
25 April 2013 17 November 2013 1.36194 10.4 2 January 2014 15 February 2014
23 September 2014 25 April 2015 1.33459 10.4 9 June 2015 26 July 2015
12 February 2016 29 August 2016 1.51836 10.6 13 October 2016 30 November 2016
12 June 2017 14 January 2018 1.23086 9.8 25 February 2018 6 April 2018
20 November 2018 10 June 2019 1.45322 10.6 30 July 2019 12 September 2019
24 March 2020 12 October 2020 1.45826 10.6 26 November 2020 13 January 2021


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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.