(416151) 2002 RQ25
| Discovery [1] | |
|---|---|
| Discovered by | CINEOS |
| Discovery site | Campo Imperatore Obs. |
| Discovery date | 3 September 2002 |
| Designations | |
| MPC designation | (416151) 2002 RQ25 |
| 2002 RQ25 | |
| Apollo · NEO[1][2] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 13.18 yr (4,815 days) |
| Aphelion | 1.4520 AU |
| Perihelion | 0.7711 AU |
| 1.1116 AU | |
| Eccentricity | 0.3063 |
| 1.17 yr (428 days) | |
| 32.119° | |
| 0° 50m 27.6s / day | |
| Inclination | 4.5760° |
| 10.532° | |
| 225.64° | |
| Earth MOID | 0.0506 AU |
| Physical characteristics | |
| Dimensions | 0.225 km (calculated)[3] |
| 12.191±0.005 h[4] | |
| 0.20 (assumed)[3] | |
| C [3] · C/X [5] | |
| 20.6[1][3] | |
|
| |
(416151) 2002 RQ25 is a carbonaceous asteroid of the Apollo group, classified as near-Earth object, approximately 0.2 kilometers in diameter. It was discovered on 3 September 2002, by the Campo Imperatore Near-Earth Object Survey (CINEOS) at the Italian Campo Imperatore Observatory, located in the Abruzzo region, east of Rome.[2]
The C-type asteroid is also classified as a C/X-type body according to the survey carried out by NASA's Spitzer Space Telescope.[5] It orbits the Sun at a distance of 0.8–1.5 AU once every 14 months (428 days). Its orbit has an eccentricity of 0.31 and an inclination of 5° with respect to the ecliptic. The asteroid's minimum orbit intersection distance with Earth is 0.0503 AU (7,520,000 km), which is slightly above the threshold limit of 0.05 AU (or about 19.5 lunar distances) to make it a potentially hazardous object.[1]
A rotational light-curve was obtained for this asteroid from photometric observations made by American astronomer Brian Warner at the U.S. Palmer Divide Observatory, Colorado, in February 2015. The ambiguous light-curve rendered a rotation period of 12.191±0.005 hours with a brightness variation of 0.72 in magnitude (U=2+), while a second solution gave 6.096 hours (or half of the first period) with an amplitude of 0.43.[4]
The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates diameter of 225 meters, based on an absolute magnitude of 20.6.[3]
References
- 1 2 3 4 5 "JPL Small-Body Database Browser: 416151 (2002 RQ25)" (2015-11-09 last obs.). Jet Propulsion Laboratory. Retrieved 11 April 2016.
- 1 2 "416151 (2002 RQ25)". Minor Planet Center. Retrieved 11 April 2016.
- 1 2 3 4 5 "LCDB Data for (416151)". Asteroid Lightcurve Database (LCDB). Retrieved 11 April 2016.
- 1 2 Warner, Brian D. (July 2015). "Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2015 January - March". The Minor Planet Bulletin. 42 (3): 172–183. Bibcode:2015MPBu...42..172W. ISSN 1052-8091. Retrieved 11 April 2016.
- 1 2 Thomas, Cristina A.; Emery, Joshua P.; Trilling, David E.; Delbó, Marco; Hora, Joseph L.; Mueller, Michael (January 2014). "Physical characterization of Warm Spitzer-observed near-Earth objects". Icarus. 228: 217–246. arXiv:1310.2000
. Bibcode:2014Icar..228..217T. doi:10.1016/j.icarus.2013.10.004. Retrieved 11 April 2016.
External links
- The Palmer Divide Observatory: Tour given by Brian Warner on YouTube (time 4:03 min.)
- 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 (415001)-(420000) – Minor Planet Center
- (416151) 2002 RQ25 at the JPL Small-Body Database
