(75482) 1999 XC173
| Discovery [1] | |
|---|---|
| Discovered by | LINEAR |
| Discovery site | Lincoln Lab's ETS |
| Discovery date | 10 December 1999 |
| Designations | |
| MPC designation | (75482) 1999 XC173 |
| 1999 XC173 · 2001 KY49 | |
| main-belt · Vestian [2] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 16.82 yr (6,143 days) |
| Aphelion | 2.5438 AU |
| Perihelion | 2.1837 AU |
| 2.3637 AU | |
| Eccentricity | 0.0762 |
| 3.63 yr (1,327 days) | |
| 201.77° | |
| 0° 16m 16.32s / day | |
| Inclination | 6.1203° |
| 58.887° | |
| 48.602° | |
| Physical characteristics | |
| Dimensions | 2.96 km (calculated)[2] |
| 1234.1709±89.9916 h[3] | |
| 0.20 (assumed)[2] | |
| S [2] | |
|
14.5[1] 14.557±0.004 (R)[3] 15.01[2] | |
|
| |
(75482) 1999 XC173 is a stony Vestian asteroid and an exceptionally slow rotating body from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered on 10 December 1999, by LINEAR at Lincoln Laboratory's Experimental Test Site in Socorro, New Mexico.[4]
The body is classified as a S-type member of the Vesta family by the Collaborative Asteroid Lightcurve Link's Light Curve Data Base (LCDB) .[2] It orbits the Sun at a distance of 2.2–2.5 AU once every 3 years and 8 months (1,327 days). Its orbit has an eccentricity of 0.08 and an inclination of 6° with respect to the ecliptic.[1] The first precovery was obtained at the discovering observatory in October 1999, extending the asteroid's observation arc by 2 months prior to its discovery.[4]
A rotational light-curve was obtained for this asteroid from photometric observations at the Californian Palomar Transient Factory in September 2013. It gave a rotation period of 1234 hours with an estimated error margin of ±90 hours. As of 2016, it is the 6th slowest rotating minor planet known to exist. Its high brightness variation of 0.69 magnitude indicates that it has a non-spheroidal shape (U=2).[3]
According to the LCDB, the body's surface has an assumed standard albedo for stony asteroids of 0.20 and a calculated diameter of 2.96 kilometers, based on an absolute magnitude of 15.01.[2]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 75482 (1999 XC173)" (2016-08-07 last obs.). Jet Propulsion Laboratory. Retrieved 13 September 2016.
- 1 2 3 4 5 6 7 "LCDB Data for (75482)". Asteroid Lightcurve Database (LCDB). Retrieved 13 September 2016.
- 1 2 3 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041
. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 13 September 2016. - 1 2 "75482 (1999 XC173)". Minor Planet Center. Retrieved 13 September 2016.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (75001)-(80000) – Minor Planet Center
- (75482) 1999 XC173 at the JPL Small-Body Database