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805 Hormuthia

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Minor planet orbiting the Sun

805 Hormuthia
Discovery
Discovered byMax Wolf
Discovery siteHeidelberg Observatory
Discovery date17 April 1915
Designations
MPC designation(805) Hormuthia
Alternative designations1915 WW
Orbital characteristics
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc100.85 yr (36835 d)
Aphelion3.7899 AU (566.96 Gm)
Perihelion2.5947 AU (388.16 Gm)
Semi-major axis3.1923 AU (477.56 Gm)
Eccentricity0.18720
Orbital period (sidereal)5.70 yr (2083.3 d)
Mean anomaly132.402°
Mean motion0° 10 22.08 / day
Inclination15.728°
Longitude of ascending node166.446°
Argument of perihelion132.362°
Earth MOID1.60843 AU (240.618 Gm)
Jupiter MOID1.7152 AU (256.59 Gm)
TJupiter3.111
Physical characteristics
Mean radius33.47±1.45 km
Synodic rotation period9.510 h (0.3963 d)
Geometric albedo0.0465±0.004
Absolute magnitude (H)9.82

805 Hormuthia is a minor planet orbiting the Sun. This asteroid follows an elliptical orbit through the main asteroid belt that reaches perihelion just outside the Kirkwood gap at 2.5 AU. Its estimated diameter is 73 km, and it is one of the 500 largest asteroids. 805 Hormuthia was discovered by Max Wolf in 1915, at the University of Heidelberg. The planet is named after Hormuth Kopff, the wife of astronomer August Kopff.

References

  1. "805 Hormuthia (1915 WW)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Archived from the original on 19 September 2020. Retrieved 4 May 2016.
  2. "Discovery Circumstances: Numbered Minor Planets (1)-(5000)". IAU Minor Planet Center. 19 October 2020. Retrieved 3 December 2020.
  3. Catalogue of Minor Planet Names and Discovery Circumstances (PDF). Springer Science+Business Media. 6 December 2020. p. 63. doi:10.1007/978-3-540-29925-7_1623.

External links

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