17365 Thymbraeus
Jupiter trojan asteroid From Wikipedia, the free encyclopedia
17365 Thymbraeus (provisional designation 1978 VF11) is a Jupiter trojan from the Trojan camp, which is located in Jupiter's trailing L5 Lagrangian point.
| Discovery[1] | |
|---|---|
| Discovered by | Eleanor F. Helin Schelte J. Bus |
| Discovery site | Palomar Obs. |
| Discovery date | 7 November 1978 |
| Designations | |
| (17365) Thymbraeus | |
| 1978 VF11 · 1998 MM49 · 1999 RE121[2] | |
| Jupiter trojan[2][1] Trojan (L5)[3] | |
| Orbital characteristics [1] | |
| Epoch 13 September 2023 (JD 2460200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 68.79 yr (25,125 days) |
| Earliest precovery date | 23 November 1954 |
| Aphelion | 5.683 AU |
| Perihelion | 4.856 AU |
| 5.270 AU | |
| Eccentricity | 0.0785 |
| 12.10 yr (4,418 days) | |
| 321.875° | |
| 0° 4m 53.321s / day | |
| Inclination | 11.644° |
| 252.124° | |
| 117.711° | |
| Physical characteristics[4]: 3 | |
| 44.904±0.525 km[1] | |
Mean density | 0.830±0.050 g/cm3[4]: 3 |
| 12.671821 h (retrograde) or 12.672607 h (prograde)[4]: 3 | |
North pole right ascension | 92°±2° (retrograde) or 268°±2° (prograde)[4]: 3 |
North pole declination | −77°±2° (retrograde) or +77°±2° (prograde)[4]: 3 |
| 0.066±0.009[1] | |
| 10.59±0.04[1] | |
Background
It was discovered by Eleanor Helin and Schelte Bus at Palomar Observatory on 7 November 1978.[2] Thymbraeus is 45 kilometres (28 mi) in diameter and has an elongated dumbbell shape that is on the verge of splitting apart due to centrifugal forces of its rapid rotation.[4] The asteroid's density is less than that of water, indicating that it has a highly porous interior structure similar to a rubble pile.[5][6][4] It was given the name Thymbraeus on 27 February 2023, after one of the two sons of the Trojan priest Laocoön who was attacked by sea serpents for attempting to warn the Trojans about the Trojan horse in Greek mythology.[7]
References
External links
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