2363 Cebriones
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| Discovery[1] | |
|---|---|
| Discovered by | Purple Mountain Obs. |
| Discovery site | Purple Mountain Obs. |
| Discovery date | 4 October 1977 |
| Designations | |
| (2363) Cebriones | |
| Pronunciation | /sɪˈbraɪəniːz/[2] |
Named after | Cebriones (Kebriones)[1] (Greek mythology) |
| 1977 TJ3 | |
| Jupiter trojan[1][3][4] Trojan[5][6] · background[6] | |
| Adjectives | Cebrionian |
| Orbital characteristics[3] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 64.78 yr (23,660 d) |
| Aphelion | 5.3936 AU |
| Perihelion | 5.0176 AU |
| 5.2056 AU | |
| Eccentricity | 0.0361 |
| 11.88 yr (4,338 d) | |
| 280.29° | |
| 0° 4m 58.8s / day | |
| Inclination | 32.136° |
| 211.74° | |
| 53.880° | |
| Jupiter MOID | 0.3475 AU |
| TJupiter | 2.6920 |
| Physical characteristics | |
| 81.84±5.1 km[7] 84.61±1.68 km[8] 95.98±1.17 km[9] | |
| 3.8 h (poor)[10] 20.05±0.04 h[11] 20.081±0.001 h[12] 20.5±0.5 h[13] | |
| 0.044±0.006[9] 0.057±0.003[8] 0.0599±0.008[7] | |
| Tholen = D[3][4][14] U–B = 0.251[3] B–V = 0.740±0.050[15] V–R = 0.490±0.030[15] V–I = 0.910±0.054[4] | |
| 9.04±0.32[16] 9.11[3][4][7][8][9] | |
2363 Cebriones is a large Jupiter trojan from the Trojan camp, approximately 84 kilometers (52 miles) in diameter. It was discovered on 4 October 1977, by astronomers at the Purple Mountain Observatory in Nanking, China.[1] The dark D-type asteroid is one of the 40 largest Jupiter trojans and has a rotation period of 20 hours.[4] It was named after Cebriones, Hektor's charioteer from Greek mythology.[1]
Cebriones is a dark Jovian asteroid orbiting in the trailing Trojan camp at Jupiter's L5 Lagrangian point, 60° behind its orbit in a 1:1 resonance (see Trojans in astronomy). It is also a non-family asteroid of the Jovian background population.[6][14]
It orbits the Sun at a distance of 5.0–5.4 AU once every 11 years and 11 months (4,338 days; semi-major axis of 5.21 AU). Its orbit has an eccentricity of 0.04 and an inclination of 32° with respect to the ecliptic.[3] The body's observation arc begins with a precovery taken at Palomar Observatory in August 1953, more than 24 years prior to its official discovery observation at Nanking.[1]
Naming
This minor planet was named from Greek mythology after King Priam's illegitimate son, Cebriones (Kebriones). He was the half-brother of Hektor and his final charioteer during the Trojan War, wounded in the duel between Hektor and Patroclus.[1] The official naming citation was published by the Minor Planet Center on 1 August 1981 (M.P.C. 6209).[17]
