Astronomy:(68950) 2002 QF15
| Discovery[1] | |
|---|---|
| Discovered by | LINEAR |
| Discovery site | Lincoln Lab's ETS |
| Discovery date | 27 August 2002 |
| Designations | |
| (68950) 2002 QF15 | |
| 2002 QF15 | |
| Minor planet category | NEO · PHA · Apollo[1][2] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 61.85 yr (22,591 days) |
| |{{{apsis}}}|helion}} | 1.4206 AU |
| |{{{apsis}}}|helion}} | 0.6930 AU |
| 1.0568 AU | |
| Eccentricity | 0.3442 |
| Orbital period | 1.09 yr (397 days) |
| Mean anomaly | 216.46° |
| Mean motion | 0° 54m 25.92s / day |
| Inclination | 25.155° |
| Longitude of ascending node | 236.24° |
| 255.51° | |
| Earth MOID | 0.0068 AU · 2.6 LD |
| Physical characteristics | |
| Dimensions | 1.12±0.03 km[3] 3.49 km (calculated)[4] |
| Rotation period | 29 h[lower-alpha 1] 47.0±0.5 h[5] |
| Geometric albedo | 0.040 (assumed)[4] 0.428±0.029[3] |
| S[4] | |
| Absolute magnitude (H) | 16.4[1][3][4] |
(68950) 2002 QF15 is a stony asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, that measures approximately 2 kilometers in diameter. It was discovered on 27 August 2002, by the LINEAR project at Lincoln Laboratory's Experimental Test Site in Socorro, New Mexico, United States.[2]
Orbit and classification
2002 QF15 is a S-type asteroid that orbits the Sun at a distance of 0.7–1.4 AU once every 1 years and 1 month (397 days). Its orbit has an eccentricity of 0.34 and an inclination of 25° with respect to the ecliptic.[1] Taken at Palomar Observatory in 1955, a first precovery from the during the Digitized Sky Survey extends the body's observation arc by 47 years prior to its official discovery observation at Socorro.[2]
It has an Earth minimum orbital intersection distance 0.0063 AU (942,000 km), which translates into 2.6 LD.[1]
Physical characteristics
In June 2006, a rotational lightcurve of 2002 QF15 was obtained from photometric observation taken by American astronomer Brian Warner at his Palmer Divide Observatory in Colorado. Lightcurve analysis gave a rotation period of 47 hours with a brightness variation of 0.35 magnitude ({{{1}}}),[5] superseding a lightcurve previously obtained by Czech astronomer Petr Pravec at Ondřejov Observatory in 2003, which gave a shorter period of 29 hours and an amplitude of 0.3 magnitude ({{{1}}}).[lower-alpha 1]
According to the survey carried out by the Japanese Akari satellite, the asteroid measures 1.12 kilometers in diameter and its surface has an albedo of 0.428,[3] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.040 and calculates a diameter of 3.49 kilometers with an absolute magnitude of 16.4.[4]
Numbering and naming
This minor planet was numbered by the Minor Planet Center on 10 September 2003.[6] As of 2018, it has not been named.[2]
Notes
- ↑ 1.0 1.1 Pravec (2003) web: rotation period 29 hours with a brightness amplitude of 0.3 mag. Summary figures at Collaborative Asteroid Lightcurve Link for (68950) and unpublished data sheet from the Ondrejov Asteroid Photometry Project
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "JPL Small-Body Database Browser: 68950 (2002 QF15)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2068950. Retrieved 1 June 2017.
- ↑ 2.0 2.1 2.2 2.3 "68950 (2002 QF15)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=68950. Retrieved 22 March 2017.
- ↑ 3.0 3.1 3.2 3.3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. doi:10.1093/pasj/63.5.1117. Bibcode: 2011PASJ...63.1117U. (online, AcuA catalog p. 153)
- ↑ 4.0 4.1 4.2 4.3 4.4 "LCDB Data for (68950)". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=68950%7C. Retrieved 22 March 2017.
- ↑ 5.0 5.1 Warner, Brian D. (December 2006). "Asteroid lightcurve analysis at the Palmer Divide Observatory - March - June 2006". The Minor Planet Bulletin 33 (4): 85–88. ISSN 1052-8091. Bibcode: 2006MPBu...33...85W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2006MPBu...33...85W. Retrieved 22 March 2017.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. Retrieved 24 February 2018.
External links
- Lightcurve plot of (68950) 2002 QF15, Palmer Divide Observatory, B. D. Warner (2006)
- Dictionary of Minor Planet Names, Google books
- (68950) 2002 QF15 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- (68950) 2002 QF15 at ESA–space situational awareness
- (68950) 2002 QF15 at the JPL Small-Body Database
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