10046 Creighton
| Discovery [1] | |
|---|---|
| Discovered by | INAS |
| Discovery site | Palomar Obs. |
| Discovery date | 2 May 1986 |
| Designations | |
| (10046) Creighton | |
Named after | James M. Creighton (American architect)[2] |
| 1986 JC · 1986 LD 1990 KH2 · 1990 SJ10 | |
| main-belt · (inner) [3] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 61.53 yr (22,475 days) |
| Aphelion | 2.8992 AU |
| Perihelion | 1.7794 AU |
| 2.3393 AU | |
| Eccentricity | 0.2394 |
| 3.58 yr (1,307 days) | |
| 131.73° | |
| 0° 16m 31.8s / day | |
| Inclination | 8.3230° |
| 101.68° | |
| 177.05° | |
| Earth MOID | 0.7628 AU |
| Physical characteristics | |
| Dimensions | 10.428±0.207 km[1][4] 11.15±2.45 km[5] 12.40 km (derived)[3] |
| 6.566±0.002 h[a] 6.5668±0.0036 h[6] 6.5698±0.0002 h[7] | |
| 0.0417 (derived)[3] 0.052±0.038[5] 0.0709±0.0132[4] | |
| C [3] · X [8] | |
| 13.4[4] 13.6[1][3][5] 13.637±0.009 (R)[6] 13.73±0.32[8] | |
10046 Creighton, provisional designation 1986 JC, is a carbonaceous asteroid from the inner regions of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 2 May 1986, by the International Near-Earth Asteroid Survey (INAS) at the U.S. Palomar Observatory, California.[2]
The dark C-type asteroid is also classified as X-type by Pan-STARRS large-scale survey. It orbits the Sun at a distance of 1.8–2.9 AU once every 3 years and 7 months (1,307 days). Its orbit has an eccentricity of 0.24 and an inclination of 8° with respect to the ecliptic.[1] The first precovery taken at the discovering observatory in 1954, extending the asteroid's observation arc by 32 years prior to its discovery.[2]
In April 2011, a rotational light-curve was obtained for this asteroid from photometric obsrevations by American astronomer Brian Skiff. The light-curve gave a well-defined rotation period of 6.566±0.002 hours with a brightness variation of 0.68 in magnitude (U=3).[a] Two other light-curves – obtained at the Palomar Transient Factory, California, in February 2014, and by astronomer Maurice Clark at Texas Tech's Preston Gott Observatory in June 2011 – are in agreement with a period of 6.5668±0.0036 and 6.5698±0.0002 hours, and an amplitude of 0.46 and 0.65, respectively (U=2/3-).[6][7]
According to the surveys carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures between 10.4 and 11.5 kilometers in diameter, and its surface has a low albedo between 0.05 and 0.07.[4][5] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.04 and a diameter of 12.4 kilometers, based on an absolute magnitude of 13.6.[3]
The minor planet was named after pioneering American architect James M. Creighton (1856-1946), who designed the Old Main building at Arizona State University, and designed and constructed the original road to the summit of Pikes Peak in Colorado.[2] Naming citation was published on 2 December 2009 (M.P.C. 67759).[9]
References
- ^ a b Skiff (2011) web: rotation period 6.566±0.002 hours with a brightness amplitude of 0.68 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (10046) Creighton
- ^ a b c d e "JPL Small-Body Database Browser: 10046 Creighton (1986 JC)" (2016-01-12 last obs.). Jet Propulsion Laboratory. Retrieved 23 August 2016.
- ^ a b c d "10046 Creighton (1986 JC)". Minor Planet Center. Retrieved 23 August 2016.
- ^ a b c d e f "LCDB Data for (10046) Creighton". Asteroid Lightcurve Database (LCDB). Retrieved 23 August 2016.
- ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 23 August 2016.
- ^ a b c d Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 23 August 2016.
- ^ a b c 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 23 August 2016.
- ^ a b Clark, Maurice (April 2012). "Asteroid Lightcurves from the Preston Gott Observatory". The Minor Planet Bulletin. 39 (2): 63–65. Bibcode:2012MPBu...39...63C. ISSN 1052-8091. Retrieved 23 August 2016.
- ^ a b Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 23 August 2016.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 23 August 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 (10001)-(15000) – Minor Planet Center
- 10046 Creighton at the JPL Small-Body Database
