4001 Ptolemaeus

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4001 Ptolemaeus
Orbit of 4001 Ptolemaeus.gif
Orbit of 4001 Ptolemaeus
Discovery
Discovered by K. Reinmuth
Discovery site Heidelberg
Discovery date 2 August 1949
Designations
MPC designation (4001) Ptolemaeus
Named after
Ptolemy
1949 PV, 1949 QD1, 1982 BU9, 1987 OE
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 24302 days (66.54 yr)
Aphelion 2.6824383 AU (401.28706 Gm)
Perihelion 1.8908792 AU (282.87150 Gm)
2.2866587 AU (342.07927 Gm)
Eccentricity 0.1730820
3.46 yr (1263.0 d)
66.637857°
0° 17m 6.135s / day
Inclination 5.459206°
130.72492°
203.98891°
Earth MOID 0.880129 AU (131.6654 Gm)
Jupiter MOID 2.66598 AU (398.825 Gm)
Jupiter Tisserand parameter 3.575
Proper orbital elements
0.2851 deg / yr
1262.71484 yr
(461206.594 d)
Physical characteristics
S
13.7

4001 Ptolemaeus (1949 PV) is a main-belt asteroid discovered on August 2, 1949 by K. Reinmuth at Heidelberg.[2]

Close Approaches[edit]

On April 24, 1989, Ptolemaeus made a close approach to the asteroid 6 Hebe. It came within 5,531,478 km of Hebe at a relative velocity of 3.6662 km/s.[1]

References[edit]

  1. ^ a b "4001 Ptolemaeus orbit diagram". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 2004001. Retrieved 14 April 2016. 
  2. ^ Larrie Benton Zacharie (30 October 2011). "4001 Ptolemaeus". VerPublishing. p. 108. ISBN 9786137867877. Retrieved 26 February 2016. 

External links[edit]