Astronomy:1897 Hind

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1897 Hind
Discovery[1]
Discovered byL. Kohoutek
Discovery siteBergedorf Obs.
Discovery date26 October 1971
Designations
(1897) Hind
Named afterJohn Russell Hind
(English astronomer)[2]
1971 UE1 · 1957 SG
Minor planet categorymain-belt · Flora[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc61.03 yr (22,291 days)
|{{{apsis}}}|helion}}2.6088 AU
|{{{apsis}}}|helion}}1.9565 AU
2.2826 AU
Eccentricity0.1429
Orbital period3.45 yr (1,260 days)
Mean anomaly155.47°
Mean motion0° 17m 8.88s / day
Inclination4.0545°
Longitude of ascending node63.423°
269.03°
Physical characteristics
Dimensions5.007±0.103 km[4][5]
5.67 km (calculated)[3]
Rotation period0.82±0.01 h[6]
2.6336±0.0001 h[7]
Geometric albedo0.24 (assumed)[3]
0.307±0.024[5]
0.3075±0.0240[4]
S[3]
Absolute magnitude (H)13.4[1][3][4] · 13.81±0.72[8]


1897 Hind, provisional designation 1971 UE1, is a Florian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 26 October 1971, by Czech astronomer Luboš Kohoutek at Bergedorf Observatory in Hamburg, Germany.[9] The asteroid was named after English astronomer John Russell Hind.[2]

Orbit and classification

Hind is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 2.0–2.6 AU once every 3 years and 5 months (1,260 days). Its orbit has an eccentricity of 0.14 and an inclination of 4° with respect to the ecliptic.[1]

A first precovery was taken at Palomar Observatory in 1956, extending the asteroid's observation arc by 15 years prior to its discovery.[9]

Physical characteristics

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

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Hind measures 5.0 kilometers in diameter and its surface has an albedo of 0.307,[4][5] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo of 0.24 – derived from 8 Flora, the family's largest member and namesake – and calculates a diameter of 5.7 kilometers with an absolute magnitude of 13.4.[3]

Rotation period

In July 2005, Hind had originally been identified as a relatively fast rotator, as photometric observations by astronomers Reiner Stoss, Jaime Nomen, Salvador Sanchez and Raoul Behrend gave a rotation period of 0.82±0.01 hours, or less than 50 minutes ({{{1}}}).[6] However, the lightcurve was only fragmentary. In August 2012, it was superseded with more accurate observation at the Australian Riverland Dingo Observatory that gave a slower period of 2.6336±0.0001 hours with a brightness variation of 0.09 in magnitude ({{{1}}}).[7]

Naming

This minor planet was named after English astronomer John Russell Hind (1823–1895), discoverer of ten minor planets including 7 Iris and 8 Flora, the namesake of the family the asteroid belongs to. Hind worked for many years at George Bishop's Observatory near London where he made his discoveries. He was also superintendent of the British Nautical Almanac Office in the second half of the 19th century.[2] The official naming citation was published by the Minor Planet Center on 1 June 1975 (M.P.C. 3827).[10]

References

  1. ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 1897 Hind (1971 UE1)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001897. 
  2. ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1897) Hind". Dictionary of Minor Planet Names – (1897) Hind. Springer Berlin Heidelberg. p. 152. doi:10.1007/978-3-540-29925-7_1898. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 "LCDB Data for (1897) Hind". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1897%7CHind. 
  4. ↑ 4.0 4.1 4.2 4.3 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. 
  5. ↑ 5.0 5.1 5.2 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 8 December 2016. 
  6. ↑ 6.0 6.1 Behrend, Raoul. "Asteroids and comets rotation curves – (1897) Hind". Geneva Observatory. http://obswww.unige.ch/~behrend/page4cou.html#001897. 
  7. ↑ 7.0 7.1 Hills, Kevin (January 2013). "Asteroid Lightcurve Analysis at Riverland Dingo Observatory (RDO): 501 Urhixidur, 1897 Hind, 1928 Summa, 6261 Chione, and (68216) 2001 CV 26.". The Minor Planet Bulletin 40 (1): 12–13. ISSN 1052-8091. Bibcode: 2013MPBu...40...12H. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013MPBu...40...12H. Retrieved 23 August 2016. 
  8. ↑ 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 23 August 2016. 
  9. ↑ 9.0 9.1 "1897 Hind (1971 UE1)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1897. 
  10. ↑ 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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