1437 Diomedes
Trojan asteroid / From Wikipedia, the free encyclopedia
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1437 Diomedes /ˌdaɪəˈmiːdiːz/ is a large Jupiter trojan from the Greek camp, approximately 150 kilometers (90 miles) in diameter. It was discovered on 3 August 1937, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.[1] The dark D/P-type asteroid belongs to the largest Jupiter trojans and has a notably elongated shape and a longer than average rotation period of 24.49 hours.[5] Diomedes was the first Jupiter trojan successfully observed during an occultation event of star.[9] It was named after the hero Diomedes from Greek mythology.[3]
Quick Facts Discovery, Discovered by ...
Discovery[1] | |
---|---|
Discovered by | K. Reinmuth |
Discovery site | Heidelberg Obs. |
Discovery date | 3 August 1937 |
Designations | |
(1437) Diomedes | |
Pronunciation | /ˌdaɪəˈmiːdiːz/[2] |
Named after | Diomedes[3] (Greek mythology) |
1937 PB · 1931 DN 1936 PQ · 1971 RD | |
Jupiter trojan[1][4][5] Greek[6][7] · background[7] | |
Adjectives | Diomedian |
Orbital characteristics[4] | |
Epoch 23 March 2018 (JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 80.80 yr (29,514 d) |
Aphelion | 5.4248 AU |
Perihelion | 4.9720 AU |
5.1984 AU | |
Eccentricity | 0.0435 |
11.85 yr (4,329 d) | |
234.43° | |
0° 4m 59.52s / day | |
Inclination | 20.485° |
315.80° | |
130.93° | |
Jupiter MOID | 0.275 AU |
TJupiter | 2.8720 |
Physical characteristics | |
Dimensions | 284 km × 126 km × 65 km[8][9] |
Mean diameter | 117.79±1.18 km[10] 132.5 km[9] 164.31±4.1 km[11] 172.60±3.42 km[12] 173.0 km[8] |
16 h[13] 18 h[14] 21 h[15] 24.46 h[9] 24.49±0.01 h[16][17] | |
0.028±0.001[12] 0.0313±0.002[11] 0.061±0.011[10] | |
Tholen = DP[4][5][8] U–B = 0.250±040[8] B–V = 0.700±014[8] V–I = 0.810±0.025[5] | |
8.18±0.28[18] 8.30[1][4][5][10][11][12] | |
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