148 Gallia
| Discovery | |
|---|---|
| Discovered by | Paul Henry and Prosper Henry |
| Discovery date | August 7, 1875 |
| Designations | |
Named after | Gaul |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 491.906 Gm (3.288 AU) |
| Perihelion | 336.871 Gm (2.252 AU) |
| 414.388 Gm (2.770 AU) | |
| Eccentricity | 0.187 |
| 1683.920 d (4.61 a) | |
Average orbital speed | 17.74 km/s |
| 123.742° | |
| Inclination | 25.299° |
| 145.192° | |
| 252.131° | |
| Physical characteristics | |
| Dimensions | 83.45 ± 5.07[2] km |
| Mass | (4.89 ± 1.67) × 1018 kg[2] |
Mean density | 16.06 ± 6.22[2] g/cm3 |
Equatorial surface gravity | 0.0273 m/s² |
Equatorial escape velocity | 0.0517 km/s |
| 20.664[3] h | |
| 0.10 | |
| Temperature | ~167 K |
| GU[4] (Tholen) | |
| 7.72[5] | |
|
| |
148 Gallia (as Greek Γαλλία) is a large main-belt asteroid that is named after the Latin name for France: Gaul. Gallia was discovered by the French brothers Paul Henry and Prosper Henry on August 7, 1875, but the credit for this discovery was given to Prosper.[6] Based upon its spectrum, this is a GU-type asteroid in the Tholen classification taxonomy, while Bus and Binzel (2002) categorize it as an S-type asteroid.[4]
Photometric observations of this asteroid at the European Southern Observatory in 1977–78 gave a light curve with a period of 0.86098 ± 0.00030 days (20.6635 ± 0.0072 h) and a brightness variation of 0.32 in magnitude.[3] A 2007 study at the Palmer Divide Observatory in Colorado Springs, Colorado yielded a period of 20.666 ± 0.002 h with a magnitude variation of 0.21.[7]
This object is the namesake of a family of 22–113 asteroids that share similar spectral properties and orbital elements. Hence they may have arisen from the same collisional event. All members have a relatively high orbital inclination.[8]
References
- ↑ Yeomans, Donald K., "164 Eva", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-30.
- 1 2 3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- 1 2 Surdej, A.; Surdej, J. (September 1979), "Photoelectric lightcurves and rotation period of the minor planet 148 Gallia", Astronomy and Astrophysics Supplement Series 37, pp. 471–474, Bibcode:1979A&AS...37..471S.
- 1 2 Lazzaro, D.; et al. (November 2004), "S3OS2: the visible spectroscopic survey of 820 asteroids", Icarus 172 (1): 179–220, Bibcode:2004Icar..172..179L, doi:10.1016/j.icarus.2004.06.006.
- ↑ Warner, Brian D. (December 2007), "Initial Results of a Dedicated H-G Project", The Minor Planet Bulletin 34, pp. 113–119, Bibcode:2007MPBu...34..113W.
- ↑ Schmadel, Lutz D. (2012), Dictionary of Minor Planet Names (6th ed.), Springer, p. 26, ISBN 3642297188.
- ↑ Warner, Brian D. (December 2007), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory - March-May 2007", The Minor Planet Bulletin 34 (4), pp. 104–107, Bibcode:2007MPBu...34..104W.
- ↑ Novaković, Bojan; et al. (November 2011), "Families among high-inclination asteroids", Icarus 216 (1), pp. 69–81, arXiv:1108.3740, Bibcode:2011Icar..216...69N, doi:10.1016/j.icarus.2011.08.016.
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