Astronomy:12696 Camus

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12696 Camus
Discovery[1]
Discovered byE. W. Elst
Discovery siteLa Silla Obs.
Discovery date26 September 1989
Designations
(12696) Camus
Named afterAlbert Camus
(French writer)[2]
1989 SF1 · 1993 QL2
Minor planet categorymain-belt · (middle)[3]
background
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc27.59 yr (10,079 days)
|{{{apsis}}}|helion}}2.9984 AU
|{{{apsis}}}|helion}}2.2463 AU
2.6224 AU
Eccentricity0.1434
Orbital period4.25 yr (1,551 days)
Mean anomaly277.29°
Mean motion0° 13m 55.56s / day
Inclination7.9950°
Longitude of ascending node160.38°
128.01°
Physical characteristics
Mean diameter7.71±3.44 km[4]
9.329±0.056 km[5][6]
11.11 km (calculated)[3]
Rotation period3.78±0.04 h[7]
Geometric albedo0.057 (assumed)[3]
0.069±0.009[5][6]
0.130±0.086[4]
C[3][8]
Absolute magnitude (H)13.4[4][5] · 13.5[1][3]


12696 Camus, provisional designation 1989 SF1, is a carbonaceous background asteroid from the central region of the asteroid belt, approximately 9 kilometers in diameter.

It was discovered on 26 September 1989, by Belgian astronomer Eric Elst at ESO's La Silla Observatory in northern Chile, and named after French Nobel Prize laureate in literature Albert Camus.[2][9]

Classification and orbit

Camus is a non-family asteroid from the main belt's background population. It orbits the Sun in the central asteroid belt at a distance of 2.2–3.0 AU once every 4 years and 3 months (1,551 days). Its orbit has an eccentricity of 0.14 and an inclination of 8° with respect to the ecliptic.[1] The asteroid's observation arc begins with its discovery, as no precoveries were taken and no identifications were made before 1989.[9]

Naming

This minor planet was named after French philosopher, author, and journalist, Albert Camus (1913–1960), who received the Nobel Prize in Literature in 1957.[2]

Camus is best known for his novels L'Etranger (The Stranger) and La Peste (The Plague). His main interests were justice, ethics, and politics. As a liberal humanist, he was against the doctrines of Christianity as well as Marxism.[2] The approved naming citation was published by the Minor Planet Center on 20 March 2000 (M.P.C. 39658).[10]

Physical characteristics

Camus has been characterized as a carbonaceous C-type asteroid by Pan-STARRS photometric survey.[8]

Lightcurves

In October 2006, a rotational lightcurve of Camus was obtained from photometric observations by Julian Oey at the Leura Observatory (E17) in Australia. The lightcurve rendered a rotation period of 3.78±0.04 hours with a brightness amplitude of 0.40 in magnitude ({{{1}}}).[7]

Diameter and albedo

According to NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Camus has an albedo of 0.07 and 0.13 with a corresponding diameter of 9.3 and 7.7 kilometers, respectively.[4][5][6] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a larger diameter of 11.1 kilometer with an absolute magnitude of 13.5.[3]

References

  1. ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 12696 Camus (1989 SF1)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012696. 
  2. ↑ 2.0 2.1 2.2 2.3 Schmadel, Lutz D. (2007). "(12696) Camus". Dictionary of Minor Planet Names – (12696) Camus. Springer Berlin Heidelberg. p. 787. doi:10.1007/978-3-540-29925-7_8669. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (12696) Camus". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=12696%7CCamus. 
  4. ↑ 4.0 4.1 4.2 4.3 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. doi:10.1088/2041-8205/759/1/L8. Bibcode: 2012ApJ...759L...8M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M. Retrieved 4 June 2016. 
  5. ↑ 5.0 5.1 5.2 5.3 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. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...90M. Retrieved 4 June 2016. 
  6. ↑ 6.0 6.1 6.2 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. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 3 December 2016. 
  7. ↑ 7.0 7.1 Oey, Julian; Vilagi, J.; Gajdos, S.; Kornos, L.; Galad, A. (September 2007). "Light curve Analysis of 8 Asteroids from Leura and Other Collaborating Observatories". The Minor Planet Bulletin 34 (3): 81–83. ISSN 1052-8091. Bibcode: 2007MPBu...34...81O. 
  8. ↑ 8.0 8.1 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. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 5 June 2016. 
  9. ↑ 9.0 9.1 "12696 Camus (1989 SF1)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=12696. 
  10. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. 

External links



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