4001 Ptolemaeus

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4001 Ptolemaeus
Orbit of 4001 Ptolemaeus
Discovery and designation
Discovered by K. Reinmuth
Discovery site Heidelberg
Discovery date August 2, 1949
Designations
MPC designation 4001
Named after Ptolemy
Alternative names 1949 PV, 1949 QD1, 1982 BU9, 1987 OE
Orbital characteristics[1]
Epoch November 4, 2013
Aphelion 2.6822707 AU (401.26199 Gm)
Perihelion 1.8904935 AU (282.81380 Gm)
Semi-major axis 2.2863821 AU (342.03789 Gm)
Eccentricity 0.1731507
Orbital period 3.46 a
Mean anomaly 198.47015°
Inclination 5.45925°
Longitude of ascending node 130.72845°
Argument of perihelion 204.1315°
Proper orbital elements
Proper mean motion 0.2851 deg / yr
Proper orbital period 1262.71484 yr
(461206.594 d)
Physical characteristics
Spectral type S
Absolute magnitude (H) 13.4

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

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]