5653 Camarillo
Discovery [1]
Discovered byE. F. Helin
K. Lawrence
Discovery sitePalomar Obs.
Discovery date21 November 1992
Designations
(5653) Camarillo
Pronunciation/ˌkæməˈriːoʊ/ KAM-ə-REE-oh
Named after
Camarillo (city in California)
1992 WD5
NEO · Amor [1][2]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc43.23 yr (15,789 days)
Aphelion2.3402 AU
Perihelion1.2484 AU
1.7943 AU
Eccentricity0.3043
2.40 yr (878 days)
77.730°
0° 24m 36.36s / day
Inclination6.8739°
9.9739°
122.51°
Earth MOID0.2846 AU · 110.9 LD
Physical characteristics
Dimensions1.526 km[3]
1.53 km (taken)[4]
1.537±0.016 km[5][6]
1.573±0.287 km[7]
4.834±0.005 h[8]
4.8346±0.0002 h[9]
4.8350±0.0018 h[10]
0.2052[3]
0.220±0.097[7]
0.271±0.057[5][6]
S [4][a] · S/Sr [11]
15.83±0.2 (R)[b] · 15.980±0.007 (R)[10] · 16.1[1][5] · 16.28±0.3[7] · 16.31±0.33[12] · 16.42[4] · 16.42±0.13[3]

5653 Camarillo (/ˌkæməˈriːoʊ/ KAM-ə-REE-oh), provisional designation 1992 WD5, is a stony asteroid and near-Earth object of the Amor group, approximately 1.5 kilometers in diameter.

It was discovered on 21 November 1992, by American astronomers Eleanor Helin and Kenneth Lawrence at Palomar Observatory in California, United States.[2] The asteroid was named for the Californian town of Camarillo.[13]

Orbit and classification

Camarillo orbits the Sun at a distance of 1.2–2.3 AU once every 2 years and 5 months (878 days). Its orbit has an eccentricity of 0.30 and an inclination of 7° with respect to the ecliptic.[1]

It has an Earth minimum orbit intersection distance, MOID, of 0.2846 AU (42,600,000 km), which corresponds to 110.9 lunar distances.[1]

A first precovery was taken at the Australian Siding Spring Observatory in 1974, extending the body's observation arc by 18 years prior to its official discovery observation at Palomar.[2]

Physical characteristics

The S-type asteroid has also been characterized as a Sr-subtype, a transitional group to the R-type asteroids.[11]

Lightcurves

Between 1995 and 2015, several rotational lightcurves of Camarillo gave a well-defined rotation period of 4.834 hours with a brightness amplitude between 0.4 and 0.85 magnitude.[8][9][10][14][b]

Diameter and albedo

According to the surveys carried out by NASA's space-based Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Camarillo has an albedo between 0.21 and 0.25 with a corresponding diameter of 1.53 to 1.57 kilometers.[3][5][6][7]

Naming

This minor planet was named after for the Californian town of Camarillo and its Camarillo Observatory (670). The town was named after Adolfo Camarillo (1864–1958), a well known regional rancher. The first discoverer is a former town resident.[13] The official naming citation was published by the Minor Planet Center on 4 August 2001 (M.P.C. 43189).[15]

References

  1. ^ Dandy (2003) Optical colors of 56 near-Earth objects: trends with size and orbit. Summary figures for (5653) Camarillo at Collaborative Asteroid Lightcurve Link (CALL)
  2. ^ a b Pravec (1999) web: rotation period 4.834 hours with a brightness amplitude of 0.4 mag. Summary figures for (5653) Camarillo at Collaborative Asteroid Lightcurve Link (CALL)

References

  1. ^ a b c d e f "JPL Small-Body Database Browser: 5653 Camarillo (1992 WD5)" (2017-06-15 last obs.). Jet Propulsion Laboratory. Retrieved 21 June 2017.
  2. ^ a b c "5653 Camarillo (1992 WD5)". Minor Planet Center. Retrieved 5 June 2016.
  3. ^ a b c d Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved 1 February 2016.
  4. ^ a b c "LCDB Data for (5653) Camarillo". Asteroid Lightcurve Database (LCDB). Retrieved 5 June 2016.
  5. ^ 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". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. S2CID 118700974. Retrieved 5 June 2016.
  6. ^ a b c Mainzer, A.; Grav, T.; Bauer, J.; Masiero, J.; McMillan, R. S.; Cutri, R. M.; et al. (December 2011). "NEOWISE Observations of Near-Earth Objects: Preliminary Results". The Astrophysical Journal. 743 (2): 17. arXiv:1109.6400. Bibcode:2011ApJ...743..156M. doi:10.1088/0004-637X/743/2/156. hdl:11368/2963127. S2CID 239991. Retrieved 5 December 2016.
  7. ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Bauer, J.; Cutri, R. M.; McMillan, R. S.; et al. (November 2012). "Physical Parameters of Asteroids Estimated from the WISE 3-Band Data and NEOWISE Post-Cryogenic Survey". The Astrophysical Journal Letters. 760 (1): 6. arXiv:1210.0502. Bibcode:2012ApJ...760L..12M. doi:10.1088/2041-8205/760/1/L12. S2CID 41459166. Retrieved 1 February 2016.
  8. ^ a b Cooney, Walter R. Jr.; Gross, John; Terrell, Dirk; Reddy, Vishnu; Dyvig, Ron (June 2007). "Lightcurve Results for 486 Cremona, 855 Newcombia 942 Romilda, 3908 Nyx, 5139 Rumoi, 5653 Camarillo, (102866) 1999 WA5". The Minor Planet Bulletin. 34 (2): 47–49. Bibcode:2007MPBu...34...47C. ISSN 1052-8091. Retrieved 1 February 2016.
  9. ^ a b Galad, Adrian; Kornos, Leonard (June 2008). "A Sample of Lightcurves from Modra". The Minor Planet Bulletin. 35 (2): 78–81. Bibcode:2008MPBu...35...78G. ISSN 1052-8091. Retrieved 1 February 2016.
  10. ^ 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. S2CID 8342929. Retrieved 5 June 2016.
  11. ^ a b 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. S2CID 119278697.
  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. S2CID 53493339. Retrieved 5 June 2016.
  13. ^ a b Schmadel, Lutz D. (2007). "(5653) Camarillo". Dictionary of Minor Planet Names – (5653) Camarillo. Springer Berlin Heidelberg. p. 479. doi:10.1007/978-3-540-29925-7_5353. ISBN 978-3-540-00238-3.
  14. ^ Mottola, S.; de Angelis, G.; di Martino, M.; Erikson, A.; Harris, A. W.; Hahn, G.; et al. (March 1995). "The EUNEASO Photometric Follow-up Program". Abstracts of the Lunar and Planetary Science Conference. 26: 1003. Bibcode:1995LPI....26.1003M. Retrieved 1 February 2016.
  15. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 5 June 2016.

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