23 Thalia

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23 Thalia   
Discovery
Discovered by: J. R. Hind
Discovery date: December 15, 1852
Alternative names: 1938 CL; 1974 QT2
Minor planet category: Main belt
Orbital characteristics
Epoch June 14, 2006 (JD 2453900.5)
Aphelion distance: 484.663 Gm (3.240 AU)
Perihelion distance: 301.483 Gm (2.015 AU)
Semi-major axis: 393.073 Gm (2.628 AU)
Eccentricity: 0.233
Orbital period: 1555.679 d (4.26 a)
Avg. orbital speed: 18.12 km/s
Mean anomaly: 328.687°
Inclination: 10.145°
Longitude of ascending node: 67.228°
Argument of perihelion: 59.311°
Physical characteristics
Dimensions: 107.5 km
Mass: 1.3×1018? kg
Mean density: 2.0? g/cm³
Equatorial surface gravity: 0.0300? m/s²
Escape velocity: 0.0568? km/s
Rotation period: 0.5128 d (12.308 h) [1]
Albedo: 0.2536 [2]
Temperature: ~164 K
Spectral type: S
Absolute magnitude: 6.95

23 Thalia (IPA: [θəˈlaɪə]) is a large main belt asteroid.

It was discovered by J. R. Hind on December 15, 1852 and named after Thalia, the Muse of comedy and pastoral poetry in Greek mythology.

[edit] Aspects

Stationary,
retrograde		 Opposition Distance to
Earth (AU)		 Maximum
brightness (mag)		 Stationary,
prograde		 Conjunction
to Sun
19 February 2005 18 August 2005 1.76946 10.8 4 October 2005 30 November 2005
5 June 2006 11 February 2007 1.19817 9.6 20 March 2007 8 May 2007
26 November 2007 10 May 2008 2.14386 11.4 3 July 2008 27 August 2008
3 February 2009 25 July 2009 2.00830 11.3 12 September 2009 10 November 2009
27 April 2010 25 December 2010 1.04941 9.1 25 January 2011 7 March 2011
31 October 2011 21 April 2012 1.97944 11.0 14 June 2012 7 August 2012
18 January 2013 5 July 2013 2.16479 11.5 24 August 2013 22 October 2013
30 March 2014 24 October 2014 1.18637 9.2 5 December 2014 18 January 2015
23 September 2015 31 March 2016 1.74319 10.5 23 May 2016 14 July 2016
1 January 2017 15 June 2017 2.23675 11.6 6 August 2017 3 October 2017
8 March 2018 14 September 2018 1.49296 10.1 30 October 2018 20 December 2018
27 July 2019 9 March 2020 1.45576 10.1 25 April 2020 15 June 2020
14 December 2020 28 May 2021 2.22531 11.6 20 July 2021 14 September 2021

[edit] References

  1. ^ http://www.psi.edu/pds/archive/lc.html
  2. ^ http://www.psi.edu/pds/asteroid/EAR_A_5_DDR_ALBEDOS_V1_1/data/albedos.tab


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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.

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