1309 Hyperborea

1309 Hyperborea
Discovery[1]
Discovered by Grigory Neujmin
Discovery site Simeiz Observatory
Discovery date October 11, 1931
Designations
MPC designation 1309
Named after Hyperborea
Alternate name(s) 1931 TO
Minor planet
category		 outer main-belt asteroid [2]
Epoch November 30, 2008
Ap 3.6902 AU
Peri 2.7129 AU
Semi-major axis 3.20154 AU
Eccentricity 0.15262
Orbital period 2092.36 days (5.73 years)
Mean anomaly 100.89°
Inclination 10.291°
Longitude of ascending node 206.183°
Argument of peri 246.413°
Physical characteristics
Dimensions 57.15 kilometres (35.51 mi) ± 3.9 kilometres (2.4 mi)
Mean diameter[4]
Rotation period 13.88 ± 0.02 hours [5]
Albedo 0.0450 ± 0.007 [4]
Absolute magnitude (H) 10.20 [6]

1309 Hyperborea (1931 TO) is an outer main-belt asteroid discovered on October 11, 1931 by Grigory Neujmin at Simeiz Observatory.[1] This asteroid was named for the homeland of the Hyperboreans a group of people from greek mythology.[7]

References

  1. ^ a b "Discovery Circumstances: Numbered Minor Planets (1)-(5000)". IAU: Minor Planet Center. http://www.cfa.harvard.edu/iau/lists/NumberedMPs000001.html. Retrieved December 23, 2008. 
  2. ^ "1309 Hyperborea (1931 TO)". JPL Small-Body Database. Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1309+Hyperborea. Retrieved December 23, 2008. 
  3. ^ "(1309) Hyperborea". AstDyS. University of Pisa. http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.0&n=1309. Retrieved December 23, 2008. 
  4. ^ a b Tedesco et al. (2004). "Supplemental IRAS Minor Planet Survey (SIMPS)". IRAS-A-FPA-3-RDR-IMPS-V6.0. Planetary Data System. Archived from the original on 2010-01-17. http://www.webcitation.org/5mqp8r4gD. Retrieved December 23, 2008. 
  5. ^ Oliver et al. (2008). "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2008 March". The Minor Planet Bulletin 35 (4): 149–150. Bibcode 2008MPBu...35..149O. 
  6. ^ Tholen (2007). "Asteroid Absolute Magnitudes". EAR-A-5-DDR-ASTERMAG-V11.0.. Planetary Data System. Archived from the original on June 11, 2008. http://web.archive.org/web/20080611192847/http%3A//www.psi.edu/pds/resource/astermag.html. Retrieved December 24, 2008. 
  7. ^ Schmadel, Lutz (2003). Dictionary of minor planet names (fifth ed.). Germany: Springer. p. 107. ISBN 978-3-540-00238-3. http://books.google.com/?id=KWrB1jPCa8AC&pg=PA107. Retrieved December 23, 2008. "Discovered 1931 Oct. 11 ... Named ... region in Greek mythology" 
1308 Halleria•1309 Hyperborea• 1310 Villigera
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