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 |
| 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) |
| 2.2863821 AU (342.03789 Gm) | |
| Eccentricity | 0.1731507 |
| 3.46 a | |
| 198.47015° | |
| Inclination | 5.45925° |
| 130.72845° | |
| 204.1315° | |
| Proper orbital elements | |
Proper mean motion | 0.2851 deg / yr |
Proper orbital period |
1262.71484 yr (461206.594 d) |
| Physical characteristics | |
| S | |
| 13.4 | |
|
| |
4001 Ptolemaeus (1949 PV) is a main-belt asteroid discovered on August 2, 1949 by K. Reinmuth at Heidelberg.
Close Approaches
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
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