Astronomy:1933 Tinchen

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1933 Tinchen
1933Tinchen (Lightcurve Inversion).png
Lightcurve-based 3D-model of Tinchen
Discovery[1]
Discovered byL. Kohoutek
Discovery siteBergedorf Obs.
Discovery date14 January 1972
Designations
(1933) Tinchen
Named afterChristine Kohoutek
(wife of the discoverer)[2]
1972 AC · 1956 TB
1956 VE · 1962 JF
1962 JS
Minor planet categorymain-belt · Vesta[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc60.59 yr (22,131 days)
|{{{apsis}}}|helion}}2.6437 AU
|{{{apsis}}}|helion}}2.0617 AU
2.3527 AU
Eccentricity0.1237
Orbital period3.61 yr (1,318 days)
Mean anomaly315.04°
Mean motion0° 16m 23.16s / day
Inclination6.8822°
Longitude of ascending node164.93°
214.52°
Physical characteristics
Dimensions4.51±0.11 km[4]
5.04 km (calculated)[3]
6.454±0.041 km[5]
Rotation period3.67±0.07 h[6]
3.6703±0.0006 h[7]
3.671±0.005 h[8]
3.672±0.003 h[lower-alpha 1]
Geometric albedo0.2950±0.0588[5]
0.4 (assumed)[3]
0.613±0.029[4]
V[3]
Absolute magnitude (H)12.769±0.003 (R)[7] · 12.88[4] · 12.9[5] · 13.07±0.32[9] · 13.1[1][3]


1933 Tinchen, provisional designation 1972 AC, is a Vestian asteroid from the inner regions of the asteroid belt, about 5 kilometers in diameter. It was discovered on 14 January 1972, by Czech astronomer Luboš Kohoutek at the Hamburger Bergedorf Observatory in Germany, who named it after his wife, Christine Kohoutek.[2][10]

Classification and orbit

Tinchen orbits the Sun in the inner main-belt at a distance of 2.1–2.6 AU once every 3 years and 7 months (1,318 days). Its orbit has an eccentricity of 0.12 and an inclination of 7° with respect to the ecliptic.[1]

The vestoid or V-type asteroid is also a member of the Vesta family. Asteroids with these spectral and orbital characteristics are thought to have all originated from the Rheasilvia crater, a large impact crater on the south-polar surface of 4 Vesta, which is the main-belt's second-most-massive asteroid after 1 Ceres.

Physical characteristics

Tinchen has a rotation period of 3.671 hours.[6][7][lower-alpha 1]

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Tinchen measures between 4.51 and 6.454 kilometers in diameter and its surface has an albedo between 0.2950 and 0.613.[4][5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for Vestian asteroids of 0.40 and calculates a diameter of 5.04 kilometers with an absolute magnitude of 13.1.[3]

Naming

The discoverer named this minor planet after his wife, Christine Kohoutek.[2] The official naming citation was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3938).[11]

Notes

  1. ↑ 1.0 1.1 Ryan 2007 (web) figures at LCDB for results of LCDB – 1933 Tinchen

References

  1. ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 1933 Tinchen (1972 AC)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001933. Retrieved 10 June 2017. 
  2. ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1933) Tinchen". Dictionary of Minor Planet Names – (1933) Tinchen. Springer Berlin Heidelberg. p. 155. doi:10.1007/978-3-540-29925-7_1934. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (1933) Tinchen". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1933%7CTinchen. Retrieved 9 December 2016. 
  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 9 December 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. 
  6. ↑ 6.0 6.1 Behrend, Raoul. "Asteroids and comets rotation curves – (1933) Tinchen". Geneva Observatory. http://obswww.unige.ch/~behrend/page4cou.html#001933. Retrieved 9 December 2016. 
  7. ↑ 7.0 7.1 7.2 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. doi:10.1088/0004-6256/150/3/75. Bibcode: 2015AJ....150...75W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W. Retrieved 9 December 2016. 
  8. ↑ Hasegawa, Sunao; Miyasaka, Seidai; Mito, Hiroyuki; Sarugaku, Yuki; Ozawa, Tomohiko; Kuroda, Daisuke et al. (June 2014). "Lightcurve survey of V-type asteroids in the inner asteroid belt". Publications of the Astronomical Society of Japan 66 (3): 5415. doi:10.1093/pasj/psu040. Bibcode: 2014PASJ...66...54H. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014PASJ...66...54H. Retrieved 9 December 2016. 
  9. ↑ 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 9 December 2016. 
  10. ↑ "1933 Tinchen (1972 AC)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1933. Retrieved 9 December 2016. 
  11. ↑ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7. https://archive.org/details/dictionaryminorp2008schm. 

External links



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