Astronomy:890 Waltraut

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890 Waltraut
Discovery[1]
Discovered byMax Wolf
Discovery siteHeidelberg Observatory
Discovery date11 March 1918
Designations
(890) Waltraut
Minor planet categorymain-belt Eos
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc95.39 yr (34842 days)
|{{{apsis}}}|helion}}3.2017 astronomical unit|AU (478.97 Gm)
|{{{apsis}}}|helion}}2.8415 AU (425.08 Gm)
3.0216 AU (452.02 Gm)
Eccentricity0.059606
Orbital period5.25 yr (1918.5 d)
Mean anomaly174.471°
Mean motion0° 11m 15.54s / day
Inclination10.872°
Longitude of ascending node160.683°
90.307°
Physical characteristics
Mean radius13.665±0.85 km
Rotation period12.581 h (0.5242 d)
Geometric albedo0.1153±0.016
Absolute magnitude (H)10.78


890 Waltraut is an Eoan asteroid from the outer region of the asteroid belt that was discovered by German astronomer Max Wolf on 11 March 1918. It was named for a character in Richard Wagner's opera, Götterdämmerung (Twilight of the Gods).

This is a member of the dynamic Eos family of asteroids that most likely formed as the result of a collisional breakup of a parent body.[3]

References

  1. Discovery Circumstances: Numbered Minor Planets
  2. Yeomans, Donald K., "890 Waltraut", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=890, retrieved 3 May 2016. 
  3. Veeder, G. J. et al. (March 1995), "Eos, Koronis, and Maria family asteroids: Infrared (JHK) photometry", Icarus 114: pp. 186–196, doi:10.1006/icar.1995.1053, Bibcode1995Icar..114..186V, https://trs.jpl.nasa.gov/bitstream/2014/29296/1/95-0212.pdf. 

External links