42 Isis

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42 Isis
Isidian orbital characteristics 1
Orbit type Main belt
Semimajor axis 2.443 AU
Perihelion distance 1.899 AU
Aphelion distance 2.986 AU
Orbital period 3.82 years
Inclination 8.53°
Eccentricity 0.223
Isidian physical characteristics 1
Diameter 100.2 km
Rotation period 3 13.59 hours
Spectral class S
Abs. magnitude 7.53
Albedo 4 0.171
History 2
Discoverer N. R. Pogson, 1856

42 Isis (eye'-sis) is a large main belt asteroid.

Isis was discovered by N. R. Pogson on May 23, 1856. It was his first asteroid discovery. It is named after Isis, the classical (Greek) name of an Egyptian goddess.

[edit] Aspects

Stationary,
retrograde
Opposition Distance to
Earth (AU)
Maximum
brightness (mag)
Stationary,
prograde
Conjunction
to Sun
18 June 2005 20 July 2005 0.91058 9.2 27 August 2005 8 May 2006
12 November 2006 2 January 2007 1.82711 11.3 23 February 2007 14 August 2007
2 February 2008 20 March 2008 1.82076 11.5 17 May 2008 18 November 2008
9 August 2009 10 September 2009 0.94491 9.5 23 October 2009 2 June 2010
27 November 2010 17 January 2011 1.93864 11.6 11 March 2011 28 August 2011
21 February 2012 6 April 2012 1.65078 11.1 2 June 2012 20 December 2012
9 September 2013 21 October 2013 1.14039 10.0 6 December 2013 22 June 2014
12 December 2014 31 January 2015 1.99996 11.7 27 March 2015 12 September 2015
14 March 2016 27 April 2016 1.43075 10.6 20 June 2016 31 January 2017
1 October 2017 18 November 2017 1.37566 10.4 5 January 2018 9 July 2018
27 December 2018 13 February 2019 2.01003 11.8 11 April 2019 29 September 2019
12 April 2020 25 May 2020 1.17882 9.9 12 July 2020 19 March 2021


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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.