46 Hestia
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| Discovery | |
|---|---|
| Discovered by: | Norman Robert Pogson |
| Discovery date: | August 16, 1857 |
| Alternative names: | |
| Minor planet category: | Main belt |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion distance: | 442.886 Gm (2.961 AU) |
| Perihelion distance: | 312.736 Gm (2.091 AU) |
| Semi-major axis: | 377.811 Gm (2.526 AU) |
| Eccentricity: | 0.172 |
| Orbital period: | 1465.958 d (4.01 a) |
| Avg. orbital speed: | 18.60 km/s |
| Mean anomaly: | 45.401° |
| Inclination: | 2.342° |
| Longitude of ascending node: | 181.168° |
| Argument of perihelion: | 176.882° |
| Physical characteristics | |
| Dimensions: | 124.1 km |
| Mass: | 2.0×1018 kg |
| Mean density: | ? g/cm³ |
| Equatorial surface gravity: | 0.0347 m/s² |
| Escape velocity: | 0.0656 km/s |
| Rotation period: | ? d |
| Albedo: | 0.052 [1] |
| Temperature: | ~175 K |
| Spectral type: | C |
| Absolute magnitude: | 8.36 |
46 Hestia (IPA: [ˈhɛstiə] or [ˈhɛstʃə]) is a large, dark Main belt asteroid. It is also the primary body of the Hestia asteroid clump. It was discovered by N. R. Pogson on August 16, 1857 and is named after Hestia, Greek goddess of the hearth.
[edit] Aspects
| Stationary, retrograde |
Opposition | Distance to Earth (AU) |
Maximum brightness (mag) |
Stationary, prograde |
Conjunction to Sun |
|---|---|---|---|---|---|
| 3 April 2005 | 21 May 2005 | 1.63857 | 11.8 | 12 July 2005 | 26 January 2006 |
| 24 September 2006 | 5 November 2006 | 1.19227 | 10.7 | 16 December 2006 | 13 July 2007 |
| 3 January 2008 | 24 February 2008 | 1.92615 | 12.2 | 16 April 2008 | 8 October 2008 |
| 2 April 2009 | 20 May 2009 | 1.64995 | 11.8 | 10 July 2009 | 24 January 2010 |
| 22 September 2010 | 3 November 2010 | 1.18198 | 10.6 | 13 December 2010 | 11 July 2011 |
| 2 January 2012 | 23 February 2012 | 1.92181 | 12.2 | 15 April 2012 | 7 October 2012 |
| 31 March 2013 | 18 May 2013 | 1.66122 | 11.8 | 9 July 2013 | 22 January 2014 |
| 20 September 2014 | 31 October 2014 | 1.17202 | 10.6 | 11 December 2014 | 10 July 2015 |
| 1 January 2016 | 22 February 2016 | 1.91738 | 12.2 | 13 April 2016 | 6 October 2016 |
| 29 March 2017 | 17 May 2017 | 1.67221 | 11.8 | 8 July 2017 | 20 January 2018 |
| 17 September 2018 | 29 October 2018 | 1.16262 | 10.6 | 8 December 2018 | 8 July 2019 |
| 31 December 2019 | 21 February 2020 | 1.91265 | 12.2 | 12 April 2020 | 5 October 2020 |
[edit] References
| Minor planets | ||
|---|---|---|
| Previous minor planet | 46 Hestia | Next minor planet |
| List of asteroids | ||
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
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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