10046 Creighton

10046 Creighton, provisional designation 1986 JC, is a carbonaceous background asteroid from the inner regions of the asteroid belt, approximately 10 kilometers (6.2 miles) in diameter. It was discovered on 2 May 1986, by astronomers with the International Near-Earth Asteroid Survey (INAS) at Palomar Observatory, California, in the United States.[1] The C-type asteroid has a rotation period of 6.57 hours.[9] It was named after American architect James M. Creighton.[1]

10046 Creighton
Discovery [1]
Discovered byINAS
Discovery sitePalomar Obs.
Discovery date2 May 1986
Designations
(10046) Creighton
Named after
James M. Creighton
(American architect)[1]
1986 JC · 1986 LD
1990 KH2 · 1990 SJ10
main-belt [1][2] · (inner)
background [3]
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc63.74 yr (23,280 d)
Aphelion2.8999 AU
Perihelion1.7791 AU
2.3395 AU
Eccentricity0.2396
3.58 yr (1,307 d)
297.13°
0° 16m 31.44s / day
Inclination8.3234°
101.68°
176.98°
Physical characteristics
Mean diameter
9.80±2.58 km[4]
10.00±0.67 km[5]
10.428±0.207 km[6][7]
11.15±2.45 km[8]
12.40 km (derived)[9]
6.566±0.002 h[lower-alpha 1]
6.567±0.0036 h[10]
6.5698±0.0002 h[11]
0.0417 (derived)[9]
0.05±0.01[5]
0.052±0.038[8]
0.07±0.04[4]
0.071±0.013[6][7]
X [12] · C [lower-alpha 2]
13.4[7]
13.50[4]
13.60[2][8][9]
13.637±0.009 (R)[10]
13.73±0.32[12]
13.85[5]

    Orbit and classification

    Creighton is a non-family asteroid from the main belt's background population.[3] It orbits the Sun in the inner main-belt at a distance of 1.8–2.9 AU once every 3 years and 7 months (1,307 days; semi-major axis of 2.34 AU). Its orbit has an eccentricity of 0.24 and an inclination of 8° with respect to the ecliptic.[2] The body's observation arc begins with a precovery taken at the discovering observatory in July 1954, nearly 32 years prior to its official discovery observation.[1]

    Physical characteristics

    Creighton has been characterized as a common X-type asteroid by Pan-STARRS' photometric survey.[12] It is also characterized as a dark C-type asteroid in the SDSS-MFB (Masi Foglia Binzel) taxonomy.[9][lower-alpha 2]

    Rotation period

    In April 2011, a rotational light-curve was obtained for this asteroid from photometric observations 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).[lower-alpha 1] 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-).[10][11]

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Creighton measures between 9.80 and 11.15 kilometers in diameter and its surface has an albedo between 0.05 and 0.071.[4][5][6][7][8]

    The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0417 and a diameter of 12.40 kilometers based on an absolute magnitude of 13.6.[9]

    Naming

    This 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.[1] The official naming citation was published by the Minor Planet Center on 2 December 2009 (M.P.C. 67759).[13]

    Notes
    1. Skiff (2011) web: rotation period 6.566±0.002 hours with a brightness amplitude of 0.68 mag. Summary figures at the LCDB.
    2. Search for Unusual Spectroscopic Candidates Among 40313 minor planets from the 3rd Release of the Sloan Digital Sky Survey Moving Object Catalog (publication). SDSS-MFB (Masi Foglia Binzel) taxonomy (catalog).

    References
    1. "10046 Creighton (1986 JC)". Minor Planet Center. Retrieved 29 April 2018.
    2. "JPL Small-Body Database Browser: 10046 Creighton (1986 JC)" (2018-03-27 last obs.). Jet Propulsion Laboratory. Retrieved 29 April 2018.
    3. "Asteroid 10046 Creighton – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 29 October 2019.
    4. Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117.
    5. Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv:1606.08923. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63.
    6. Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68.
    7. Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
    8. 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.
    9. "LCDB Data for (10046) Creighton". Asteroid Lightcurve Database (LCDB). Retrieved 29 April 2018.
    10. 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.
    11. 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.
    12. 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.
    13. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 29 April 2018.

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