Astronomy:1166 Sakuntala

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1166 Sakuntala
Discovery[1]
Discovered byP. Parchomenko
Discovery siteSimeiz Obs.
Discovery date27 June 1930
Designations
(1166) Sakuntala
Named afterShakuntala
(Sanskrit drama)[2]
1930 MA · 1962 KA
Minor planet categorymain-belt · (inner)[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc86.75 yr (31,685 days)
|{{{apsis}}}|helion}}3.0650 AU
|{{{apsis}}}|helion}}2.0044 AU
2.5347 AU
Eccentricity0.2092
Orbital period4.04 yr (1,474 days)
Mean anomaly177.36°
Mean motion0° 14m 39.12s / day
Inclination18.924°
Longitude of ascending node106.69°
189.92°
Physical characteristics
Dimensions22.70±5.56 km[4]
25.78 km (derived)[3]
26.011±0.181 km[5]
26.32±0.39 km[6]
28.74±0.9 km[7]
29.249±0.130 km[8]
Rotation period6.29±0.01 h[9]
6.2915±0.0002 h[10]
6.30±0.02 h[11]
20 h[12]
Geometric albedo0.185±0.006[6]
0.22±0.11[4]
0.2270±0.0315[8]
0.286±0.047[5]
0.2914 (derived)[3]
0.6460±0.040[7]
S [3][13]
Absolute magnitude (H)8.80[7] · 9.9[3][8][14] · 10.40[1][6] · 10.56[4]


1166 Sakuntala, provisional designation 1930 MA, is a stony background asteroid from the central regions of the asteroid belt, approximately 26 kilometers in diameter. Discovered by Praskovjya Parchomenko at Simeiz Observatory in 1930, the asteroid was named after the figure of Shakuntala from an ancient Indian drama.[2]

Discovery

Sakuntala was discovered by Soviet astronomer Praskovjya Parchomenko at the Simeiz Observatory on the Crimean peninsula on 27 June 1930. Two night later, it was independently discovered by German astronomer Karl Reinmuth at Heidelberg Observatory.[15] The body's observation arc begins at Uccle Observatory in May 1938, or 8 years after its official discovery observation at Simeiz.[15]

Orbit and classification

The asteroid is a background asteroid, that is not a member of any known asteroid family. Sakuntala orbits the Sun in the central main-belt at a distance of 2.0–3.1 AU once every 4.04 years (1,474 days). Its orbit has an eccentricity of 0.21 and an inclination of 19° with respect to the ecliptic.[1]

Physical characteristics

Sakuntala has been characterized as a stony S-type asteroid.[3][13]

Rotation period

Several rotational lightcurves of Sakuntala were obtained from photometric observations. Analysis of the best-rated lightcurve gave a rotation period of 6.29 hours with a brightness variation of 0.38 magnitude ({{{1}}}).[9]

Other measurements gave a similar period of 6.2915 and 6.30 hours, respectively ({{{1}}}),[10][11] while lightcurves with a period of larger than 20 hours are considered to be wrong ({{{1}}}).[12]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Sakuntala measures between 22.70 and 29.249 kilometers in diameter and its surface has an albedo between 0.185 and 0.6460.[4][5][6][7][8]

The Collaborative Asteroid Lightcurve Link derives an albedo of 0.2914 and a diameter of 25.78 kilometers based on an absolute magnitude of 9.9.[3]

Naming

This minor planet was named after the protagonist Shakuntala in the Sanskrit drama The Recognition of Shakuntala by Indian poet Kālidāsa. The drama is part of the Mahabharata, one of the major Sanskrit epics of ancient India.

The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 108).[2]

References

  1. ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 1166 Sakuntala (1930 MA)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001166. Retrieved 6 September 2017. 
  2. ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1166) Sakuntala". Dictionary of Minor Planet Names – (1166) Sakuntala. Springer Berlin Heidelberg. p. 98. doi:10.1007/978-3-540-29925-7_1167. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 "LCDB Data for (1166) Sakuntala". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1166%7CSakuntala. Retrieved 6 September 2017. 
  4. ↑ 4.0 4.1 4.2 4.3 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. doi:10.3847/0004-6256/152/3/63. Bibcode: 2016AJ....152...63N. 
  5. ↑ 5.0 5.1 5.2 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R. et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal 791 (2): 11. doi:10.1088/0004-637X/791/2/121. Bibcode: 2014ApJ...791..121M. 
  6. ↑ 6.0 6.1 6.2 6.3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. doi:10.1093/pasj/63.5.1117. Bibcode: 2011PASJ...63.1117U.  (online, AcuA catalog p. 153)
  7. ↑ 7.0 7.1 7.2 7.3 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode: 2004PDSS...12.....T. https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab. Retrieved 22 October 2019. 
  8. ↑ 8.0 8.1 8.2 8.3 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. 
  9. ↑ 9.0 9.1 Garceran, Alfonso Carreno; Aznar, Amadeo; Mansego, Enrique Arce; Rodriguez, Pedro Brines; de Haro, Juan Lozano; Silva, Alvaro Fornas et al. (January 2016). "Nineteen Asteroids Lightcurves at Asteroids Observers (OBAS) - MPPD: 2015 April - September". The Minor Planet Bulletin 43 (1): 92–97. ISSN 1052-8091. Bibcode: 2016MPBu...43...92G. 
  10. ↑ 10.0 10.1 Brincat, Stephen M. (July 2016). "Rotation Period Determinations for 1166 Sakuntala and 3958 Komendantov". The Minor Planet Bulletin 43 (3): 200–201. ISSN 1052-8091. Bibcode: 2016MPBu...43..200B. 
  11. ↑ 11.0 11.1 Malcolm, G. (December 2001). "Rotational Periods and Lightcurves of 1166 Sakuntala and 1568 Aisleen". The Minor Planet Bulletin 28: 64. Bibcode: 2001MPBu...28...64M. 
  12. ↑ 12.0 12.1 Behrend, Raoul. "Asteroids and comets rotation curves – (1166) Sakuntala". Geneva Observatory. http://obswww.unige.ch/~behrend/page3cou.html#001166. Retrieved 6 September 2017. 
  13. ↑ 13.0 13.1 Belskaya, I. N.; Fornasier, S.; Tozzi, G. P.; Gil-Hutton, R.; Cellino, A.; Antonyuk, K. et al. (March 2017). "Refining the asteroid taxonomy by polarimetric observations". Icarus 284: 30–42. doi:10.1016/j.icarus.2016.11.003. Bibcode: 2017Icar..284...30B. 
  14. ↑ Faure, Gerard; Garret, Lawrence (December 2007). "Suggested Revised H Values of Selected Asteroids: Report Number 3". The Minor Planet Bulletin 34 (4): 95–99. ISSN 1052-8091. Bibcode: 2007MPBu...34...95F. 
  15. ↑ 15.0 15.1 "1166 Sakuntala (1930 MA)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1166. Retrieved 6 September 2017. 

External links



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