181 Eucharis
| Discovery | |
|---|---|
| Discovered by | Pablo Cottenot |
| Discovery date | February 2, 1878 |
| Designations | |
| A906 GA | |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch June 14, 2006 (JD 2453900.5) | |
| Aphelion | 562.742 Gm (3.762 AU) |
| Perihelion | 376.603 Gm (2.517 AU) |
| 469.672 Gm (3.140 AU) | |
| Eccentricity | 0.198 |
| 2031.902 d (5.56 a) | |
Average orbital speed | 16.64 km/s |
| 95.743° | |
| Inclination | 18.801° |
| 143.652° | |
| 317.284° | |
| Physical characteristics | |
| Dimensions | 106.0 km |
| 52.23[2] h | |
| Albedo | 0.115 4 |
Spectral type |
S (Tholen) Xk (Bus)[3] |
| 7.84 | |
|
| |
181 Eucharis is a large, slowly rotating main-belt asteroid that was discovered by French astronomer Pablo Cottenot on February 2, 1878, from Marseille Observatory.[4] It was his only asteroid discovery. This object was named after Eucharis, a Greek nymph.
In the Tholen classification system, it is categorized as a stony S-type asteroid, while the Bus asteroid taxonomy system lists it as an Xk asteroid.[3] Photometric observations of this asteroid at the Goat Mountain Astronomical Research Station in Rancho Cucamonga, California during 2007 gave a light curve with a leisurely rotation period of 52.23 ± 0.05 hours.[2]
This object is the namesake of a family of 149–778 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.[5]
References
- ↑ Yeomans, Donald K., "181 Eucharis", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-30.
- 1 2 Stephens, Robert D. (March 2008), "Long Period Asteroids Observed from GMARS and Santana Observatories", The Minor Planet Bulletin 35 (1), pp. 21–22, Bibcode:2008MPBu...35...21S.
- 1 2 DeMeo, Francesca E.; et al. (July 2009), "An extension of the Bus asteroid taxonomy into the near-infrared" (PDF), Icarus 202 (1), pp. 160–180, Bibcode:2009Icar..202..160D, doi:10.1016/j.icarus.2009.02.005, retrieved 2013-04-08. See appendix A.
- ↑ "Numbered Minor Planets 1–5000", Discovery Circumstances (IAU Minor Planet center), retrieved 2013-04-07.
- ↑ 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.
External links
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