117 Lomia
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| Discovery | |
|---|---|
| Discovered by | Alphonse Borrelly |
| Discovery date | September 12, 1871 |
| Designations | |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 460.170 Gm (3.076 AU) |
| Perihelion | 434.790 Gm (2.906 AU) |
| 447.480 Gm (2.991 AU) | |
| Eccentricity | 0.0287 |
| 1889.604 d (5.17 a) | |
|
Average orbital speed
|
17.22 km/s |
| 0.674° | |
| Inclination | 14.928° |
| 348.991° | |
| 62.315° | |
| Physical characteristics | |
| Dimensions | 146.78 ± 3.96[2] km |
| Mass | (6.08 ± 0.63) × 1018[2] kg |
|
Mean density
|
3.67 ± 0.48[2] g/cm3 |
| 0.0416 m/s² | |
| 0.0786 km/s | |
| Albedo | 0.053[3] |
| Temperature | ~161 K |
|
Spectral type
|
XC[3] |
| 7.95 | |
117 Lomia is a large main-belt asteroid that has a nearly circular orbit; the orbital eccentricity is 0.029.[1] It was discovered by French astronomer Alphonse Borrelly on September 12, 1871, from the Marseilles Observatory.[4] The preliminary orbital elements were published in the following year by German astronomer Friedrich Tietjen.[5] The reason for the name is uncertain, but Lutz D. Schmadel believes it is most likely a misspelling of Lamia, the female demon of Greek mythology (the asteroid 248 Lameia is also named after this figure).[4]
Photometric observations of this asteroid in 1985 gave a light curve with a period of 9.127 ± 0.009 hours and a brightness variation of 0.29 ± 0.03 in magnitude. The curve is symmetrical with a single maxima and minima. This object has a spectrum that matches an XC classification; occupying the transition range between an X-type and a C-type asteroid.[3]
Two occultations of stars by Lomia have so far been observed, in 2000 and 2003.
References
- ↑ 1.0 1.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 2.2 Lua error in package.lua at line 80: module 'strict' not found. See Table 1.
- ↑ 3.0 3.1 3.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 Lutz D. Schmadel, Dictionary of Minor Planet Names, p. 25.
- ↑ Lua error in package.lua at line 80: module 'strict' not found. See Table 1.
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