4001 Ptolemaeus (Asteroid)
From South El Monte , 4001 Ptolemaeus is not readily observable since it is very close to the Sun, at a separation of only 12° from it.
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Name
4001 Ptolemaeus
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Object type
Asteroid
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Current position
| Computed for: | 13 June 2026 |
| Right ascension: | 04h37m [1] |
| Declination: | +18°35' [1] |
| Constellation: | Taurus |
| Magnitude: | 18.45 (V) [1] |
| Distance: | 3.20 AU 26.65 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 2.29 AU |
| Eccentricity: | 0.171938 |
| Inclination: | 5.46° |
| Longitude ascending node: | 130.63° |
| Argument of perihelion: | 204.02° |
| Epoch of elements: | 9 Jun 2026 |
| Mean Anomaly at epoch: | 69.49° |
| Absolute mag (H): | 13.74 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 1.89 AU |
| Aphelion: | 2.68 AU |
| Orbital period: | 3.46 years |
Source