444 Gyptis: Difference between revisions
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In 2004, Kochetova estimated Gyptis to have a mass of 1.25{{e|19}} [[kilogram|kg]] with a high density of 5.53 g/[[cubic centimetre|cm³]].<ref name=Baer/> |
In 2004, Kochetova estimated Gyptis to have a mass of 1.25{{e|19}} [[kilogram|kg]] with a high density of 5.53 g/[[cubic centimetre|cm³]].<ref name=Baer/> |
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Observations of an [[occultation]] on October 14, 2007 produced six [[Chord ( |
Observations of an [[occultation]] on October 14, 2007 produced six [[Chord (astronomy)|chords]] indicating an ellipsoid of 179×150 km.<ref name=euroster>{{cite web |
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|date=2007-10-14 |
|date=2007-10-14 |
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|title=2007 European Asteroidal Occultation Results |
|title=2007 European Asteroidal Occultation Results |
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Revision as of 18:24, 11 July 2010
| Discovery | |
|---|---|
| Discovered by | J. Coggia |
| Discovery date | March 31, 1899 |
| Designations | |
Named after | Gyptis |
| 1899 EL | |
| Main belt | |
| Orbital characteristics | |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 486.992 Gm (3.255 AU) |
| Perihelion | 343.129 Gm (2.294 AU) |
| 415.06 Gm (2.775 AU) | |
| Eccentricity | 0.173 |
| 1687.986 d (4.62 a) | |
Average orbital speed | 17.88 km/s |
| 195.011° | |
| Inclination | 10.277° |
| 195.85° | |
| 154.569° | |
| Physical characteristics | |
| Dimensions | 179×150km[1] 163.08 km[2] |
| Mass | 1.25×1019 kg[3] |
Mean density | 5.53±1.46 g/cm³[3] |
| unknown | |
| unknown | |
| 6.214 h[2] | |
| Albedo | 0.049[2] |
| Temperature | unknown |
Spectral type | C[2] |
| 7.83[2] | |
444 Gyptis is a very large Main belt asteroid. It is classified as a C-type asteroid and is probably composed of carbonaceous material.
It was discovered by J. Coggia on March 31, 1899 in Marseilles.
In 2004, Kochetova estimated Gyptis to have a mass of 1.25×1019 kg with a high density of 5.53 g/cm³.[3]
Observations of an occultation on October 14, 2007 produced six chords indicating an ellipsoid of 179×150 km.[1]
References
- ^ a b "2007 European Asteroidal Occultation Results". euroster.net (a website for Asteroidal Occultation Observers in Europe). 2007-10-14. Retrieved 2008-12-01. (Chords)
- ^ a b c d e "JPL Small-Body Database Browser: 444 Gyptis (1899 EL)". 2008-11-01 last obs. Retrieved 2008-11-28.
{{cite web}}: Check date values in:|date=(help) - ^ a b c Jim Baer (2008). "Recent Asteroid Mass Determinations". Personal Website. Retrieved 2008-11-27.
External links
- Orbital simulation from JPL (Java) / Ephemeris
_mathilde.jpg){kind=small} | This article about a C-type asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it. |