Asteroid
1118 Hanskya (prov. designation 1927 QD ) is a large background asteroid , approximately 77 kilometers (48 miles) in diameter, located in the outer regions of the asteroid belt . Discovered by Sergey Belyavsky and Nikolaj Ivanov in 1927, it was named after Russian astronomer Aleksey Hansky . The presumed dark C-type asteroid has a rotation period of 15.6 hours.
Discovery
Hanskya was discovered on 29 August 1927, by Russian astronomers Sergey Belyavsky and Nikolaj Ivanov at the Simeiz Observatory on the Crimean peninsula.[ 3] Karl Reinmuth at the German Heidelberg Observatory – who observed the body only one day later and announced it first – and by Belgian astronomer Eugène Delporte at Uccle Observatory on 17 September.[ 2]
Orbit and classification
Hanskya is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements .[ 4] [ 5] outer asteroid belt at a distance of 3.1–3.4 AU once every 5 years and 9 months (2,103 days). Its orbit has an eccentricity of 0.04 and an inclination of 14° with respect to the ecliptic .[ 1]
The body's observation arc begins at Heidelberg or Simeiz one night after its official discovery observation.[ 3]
Naming
This minor planet was named on the 25th anniversary of the death of Russian Aleksey Hansky (1870–1908), whose initiative lead to the construction of the discovering Simeiz Observatory.[ 2]
Physical characteristics
Hanskya is an assumed carbonaceous C-type asteroid .[ 8]
Rotation period
In October 21010, a rotational lightcurve of Hanskya was obtained from photometric observations at the Sunflower Observatory in Kansas, United States (739 rotation period of 15.61 hours with a brightness amplitude of 0.18 magnitude (U=2 [ 14]
More recent observations at the Palomar Transient Factory and by French amateur astronomer René Roy gave a longer period of 25.31 and 25.3481 hours and an amplitude of 0.38 and 0.25, respectively (U=2/2 [ 16] [ 15]
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 , Hanskya measures between 70.954 and 90.29 kilometers in diameter and its surface has an albedo between 0.029 and 0.056.[ 6] [ 7] [ 9] [ 10] [ 11] [ 12] [ 13]
The Collaborative Asteroid Lightcurve Link derives a low albedo of 0.0358 and a diameter of 77.03 kilometers based on an absolute magnitude of 9.8.[ 8]
References
^ a b c d e "JPL Small-Body Database Browser: 1118 Hanskya (1927 QD)" (2017-06-28 last obs.). Jet Propulsion Laboratory . Retrieved 17 August 2017 .^ a b c Schmadel, Lutz D. (2007). "(1118) Hanskya". Dictionary of Minor Planet Names – (1118) Hanskya . Springer Berlin Heidelberg . p. 95. doi :10.1007/978-3-540-29925-7_1119 . ISBN 978-3-540-00238-3 ^ a b c "1118 Hanskya (1927 QD)" . Minor Planet Center . Retrieved 29 August 2017 .^ a b "Asteroid 1118 Hanskya – Proper Elements" . AstDyS-2, Asteroids – Dynamic Site. Retrieved 13 March 2020 .^ a b "Asteroid 1118 Hanskya" . Small Bodies Data Ferret . Retrieved 13 March 2020 .^ a b c 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. arXiv :1406.6645 Bibcode :2014ApJ...791..121M . doi :10.1088/0004-637X/791/2/121 . Retrieved 14 September 2016 . ^ 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 35447010 . ^ a b c d e f "LCDB Data for (1118) Hanskya" . Asteroid Lightcurve Database (LCDB). Retrieved 14 September 2016 .^ a b c d 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 . Retrieved 22 October 2019 . ^ a b c d 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. Bibcode :2011PASJ...63.1117U . doi :10.1093/pasj/63.5.1117 . online , AcuA catalog p. 153 )^ a b c d 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 . S2CID 9341381 . Retrieved 29 August 2017 . ^ a b c d 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 ^ a b c d 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 . S2CID 46350317 . Retrieved 14 September 2016 . ^ a b Robinson, L. E. (June 2002). "Lightcurve Photometry of 551 Ortrud, 1118 Hanskya, and 1916 Boreas from Sunflower Observatory" . The Minor Planet Bulletin . 29 : 37– 38. Bibcode :2002MPBu...29...37R . Retrieved 14 September 2016 . ^ a b 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 14 September 2016 . ^ Behrend, Raoul. "Asteroids and comets rotation curves – (1118) Hanskya" . Geneva Observatory . Retrieved 14 September 2016 .
External links
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