9023 Mnesthus
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9023 Mnesthus /ˈnɛsθəs/ is a large Jupiter trojan from the Trojan camp, approximately 50 kilometers (31 miles) in diameter. It was discovered on 10 September 1988, by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory in California.[1] The dark Jovian asteroid belongs to the 100 largest Jupiter trojans and has a longer-than-average rotation period of 30.7 hours.[9] It was named after the Trojan Mnestheus, a companion of Aeneas in Classical mythology.[1]
Quick Facts Discovery, Discovered by ...
Discovery [1] | |
---|---|
Discovered by | C. Shoemaker E. Shoemaker |
Discovery site | Palomar Obs. |
Discovery date | 10 September 1988 |
Designations | |
(9023) Mnesthus | |
Pronunciation | /ˈnɛsθəs, -θuːs/[2] |
Named after | Mnestheus [1] (Greco-Roman mythology) |
1988 RG1 | |
Jupiter trojan [1][3] Trojan [4] · background [5] | |
Adjectives | Mnesthian |
Orbital characteristics [3] | |
Epoch 23 March 2018 (JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 67.76 yr (24,750 d) |
Aphelion | 5.5611 AU |
Perihelion | 4.8924 AU |
5.2268 AU | |
Eccentricity | 0.0640 |
11.95 yr (4,365 d) | |
192.08° | |
0° 4m 57s / day | |
Inclination | 23.917° |
159.89° | |
158.39° | |
Jupiter MOID | 0.0701 AU |
TJupiter | 2.8240 |
Physical characteristics | |
Mean diameter | 49.15±0.59 km[6] 60.80±4.15 km[7] |
30.66±0.01 h[8][lower-alpha 1] | |
0.033±0.005[7] 0.073±0.014[6] | |
C (assumed)[9] | |
10.0[6] 10.1[1][3] 10.2[9] 10.40[7] | |
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