1437 Diomedes
From Wikipedia, the free encyclopedia
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Discovery[2] and designation
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| Discovered by | Karl Wilhelm Reinmuth |
| Discovery date | August 3, 1937 |
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Designations
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| Alternative names[1] | 1937 PB |
| Minor planet category |
Jupiter Trojan |
| Epoch February 04, 2008 (JD 2454500.5) | |
| Aphelion | 806.077 Gm (5.388 AU) |
| Perihelion | 738.963 Gm (4.940 AU) |
| Semi-major axis | 772.520 Gm (5.164 AU) |
| Eccentricity | 0.043 |
| Orbital period | 4286.226 d (11.74 a) |
| Average orbital speed | 13.10 km/s |
| Mean anomaly | 287.280° |
| Inclination | 20.515° |
| Longitude of ascending node | 315.828° |
| Dimensions | 164.3 km[2] ~(284×126×65)[3] |
| Mass | 4.6×1018 kg |
| Mean density | 2.0 g/cm³ |
| Equatorial surface gravity | 0.0459 m/s² |
| Equatorial escape velocity | 0.0869 km/s |
| Sidereal rotation period |
24.46 hr[2] |
| Axial tilt | ?° |
| Pole ecliptic latitude | ? |
| Pole ecliptic longitude | ? |
| Geometric albedo | 0.03[2] |
| Temperature | ~122 K |
| Spectral type | ? |
| Absolute magnitude | 8.30[2] |
1437 Diomedes is a Jupiter trojan asteroid that orbits in the L4 Lagrangian point of the Sun-Jupiter system, in the "Greek Camp" of Trojan asteroids. It was named after the Greek hero Diomedes. It was discovered by Karl Wilhelm Reinmuth on August 3, 1937 in Heidelberg, Germany.
[edit] References
- ^ [1]
- ^ a b c d JPL Small-Body Database Browser: 1437 Diomedes (1937 PB) (2008-01-18 last obs). Retrieved on 2008-05-23.
- ^ Sato, Isao; Šarounová, Lenka; Fukushima, Hideo (2000). "Size and Shape of Trojan Asteroid Diomedes from Its Occultation and Photometry". Icarus 145: 25-32. doi:.
[edit] External links
- Discovery Circumstances: Numbered Minor Planets
- Orbital simulation from JPL (Java) / Ephemeris
- Size and Shape of Trojan Asteroid Diomedes from Its Occultation and Photometry (284×126×65)
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