41 Daphne

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41 Daphne
Discovery
Discovered by: Hermann Mayer Salomon Goldschmidt
Discovery date: May 22, 1856
Alternative names:  
Minor planet category: Main belt
Orbital characteristics
Epoch December 31, 2006 (JD 2454100.5)
Aphelion distance: 526.144 Gm (3.517 AU)
Perihelion distance: 301.220 Gm (2.014 AU)
Semi-major axis: 413.682 Gm (2.765 AU)
Eccentricity: 0.272
Orbital period: 1679.618 d (4.60 a)
Avg. orbital speed: 17.58 km/s
Mean anomaly: 247.500°
Inclination: 15.765°
Longitude of ascending node: 178.159°
Argument of perihelion: 46.239°
Physical characteristics
Dimensions: 174.0 km
Mass: 5.5×1018 kg
Mean density: ? g/cm³
Equatorial surface gravity: 0.0486 m/s²
Escape velocity: 0.0920 km/s
Rotation period: ? d
Albedo: 0.083 [1]
Temperature: ~167 K
Spectral type: C
Absolute magnitude: 7.12

41 Daphne (IPA: [ˈdæfni]) is a large Main belt asteroid. This dark-surfaced body is likely composed of primitive carbonaceous chondrites. It was discovered by H. Goldschmidt on May 22, 1856 and named after Daphne, the nymph in Greek mythology who was turned into a laurel tree. Daphne has been observed to occult stars three times (all in 1990s). Daphnean lightcurves suggest that the asteroid is irregular in shape.

[edit] Aspects

Stationary,
retrograde
Opposition Distance to
Earth (AU)
Maximum
brightness (mag)
Stationary,
prograde
Conjunction
to Sun
19 March 2005 28 August 2005 2.49018 12.1 21 October 2005 19 December 2005
15 May 2006 24 October 2006 2.28098 12.0 17 December 2006 11 February 2007
31 July 2007 16 March 2008 1.04117 9.3 13 April 2008 21 May 2008
25 January 2009 23 July 2009 2.06729 11.3 16 September 2009 4 November 2009
13 April 2010 20 September 2010 2.55188 12.3 12 November 2010 11 January 2011
10 June 2011 28 November 2011 1.82121 11.2 19 January 2012 7 March 2012
30 September 2012 28 May 2013 1.34059 10.3 15 July 2013 24 August 2013
6 March 2014 19 August 2014 2.40112 12.0 12 October 2014 7 December 2014
5 May 2015 13 October 2015 2.41166 12.2 6 December 2015 2 February 2016
12 July 2016 30 January 2017 1.20671 9.5 9 March 2017 16 April 2017
28 December 2017 10 July 2018 1.86596 11.1 2 September 2018 17 October 2018
3 April 2019 10 September 2019 2.54874 12.3 3 November 2019 1 January 2020
29 May 2020 10 November 2020 2.05288 11.6 2 January 2021 24 February 2021

[edit] References

  1. ^ http://www.psi.edu/pds/resource/albedo.html


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