1867 Deiphobus
From Infogalactic: the planetary knowledge core
| Discovery [1] | |
|---|---|
| Discovered by | C. U. Cesco A. G. Samuel |
| Discovery site | El Leoncito Complex |
| Discovery date | 3 March 1971 |
| Designations | |
| MPC designation | 1867 Deiphobus |
|
Named after
|
Deiphobus (Greek mythology)[2] |
| 1971 EA | |
| Jupiter trojan | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 44.62 yr (16,298 days) |
| Aphelion | 5.3501 AU |
| Perihelion | 4.9069 AU |
| 5.1285 AU | |
| Eccentricity | 0.0432 |
| 11.61 yr (4,242 days) | |
| 160.97° | |
| Inclination | 26.911° |
| 283.70° | |
| 0.1752° | |
| Physical characteristics | |
| Dimensions | 122.67 km[3] 131.31±1.87 km[4] 118.22±1.62 km[5] 122.65 km (derived)[6] |
| 58.66 h[7] 24 h[8] 15.72±0.01 h[9] 51.70±0.05 h[lower-alpha 1] |
|
| 0.0422[3] 0.037±0.001[4] 0.060±0.009[5] 0.0396 (derived)[6] |
|
| B–V = 0.734 U–B = 0.232 Tholen = D D [6] |
|
| 8.3 | |
1867 Deiphobus, provisional designation 1971 EA, is a large Jupiter trojan, about 123 kilometers in diameter. It was discovered by Argentine astronomers Carlos Cesco and A. G. Samuel at the Leoncito Astronomical Complex in Argentina on 3 March 1971.[10]
The D-type minor planet orbits the Sun at a distance of 4.9–5.4 AU once every 11.61 years (4,242 days). It has an albedo of 0.042. Photometric observations of this asteroid during 1994 were used to build a light curve showing a slow rotation period of 58.66 ± 0.18 hours with a brightness variation of 0.27 ± 0.03 magnitude.[7]
It was named after the Trojan warrior, Deiphobus, son of Priamus (also see 108 Hecuba and 884 Priamus).[2]
References
- ↑ Melita (2012), gives a rotation period of 51.70±0.05. Summary figures listed at www
.minorplanet .info /PHP /GenerateALCDEFPage _Local .php?AstInfo=1867%7CDeiphobus
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External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- 1867 Deiphobus at the JPL Small-Body Database
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