Global Information11429 Demodokus information
 Shape model of Demodokus from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | C. J. van Houten I. van Houten-G. T. Gehrels |
| Discovery site | Palomar Obs. |
| Discovery date | 24 September 1960 |
| Designations | |
MPC designation | (11429) Demodokus |
| Pronunciation | /dɪˈmɒdəkəs/ |
Named after | Δημόδοκος Dēmodokos[1] (Greek mythology) |
Alternative designations | 4655 P-L · 1996 RZ32 PLS4655 |
Minor planet category | Jupiter trojan[1][2] Greek[3] · background[4] |
| Orbital characteristics[2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 57.65 yr (21,056 d) |
| Aphelion | 5.3994 AU |
| Perihelion | 5.1057 AU |
Semi-major axis | 5.2525 AU |
| Eccentricity | 0.0280 |
Orbital period (sidereal) | 12.04 yr (4,397 d) |
Mean anomaly | 173.02° |
Mean motion | 0° 4m 54.84s / day |
| Inclination | 17.081° |
Longitude of ascending node | 6.3025° |
Argument of perihelion | 89.223° |
| Jupiter MOID | 0.2122 AU |
| TJupiter | 2.9110 |
| Physical characteristics | |
Mean diameter | 37.63±1.31 km[5] 46.30 km (calculated)[6] |
Synodic rotation period | 50.16±0.06 h[7][a] |
Geometric albedo | 0.057 (assumed)[6] 0.086±0.017[5] |
Spectral type | C (assumed)[6] |
Absolute magnitude (H) | 10.40[1][2][5][6] |
11429 Demodokus /dɪˈmɒdəkəs/ is a mid-sized Jupiter trojan from the Greek camp, approximately 38 kilometers (24 miles) in diameter. It was discovered during the Palomar–Leiden survey at the Palomar Observatory in 1960 and later named after the blind singer Demodocus from Greek mythology.[1] The dark Jovian asteroid has a longer-than average rotation period of 50.2 hours.[6]
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