4001 Ptolemaeus (Asteroid)
From South El Monte , 4001 Ptolemaeus is visible in the dawn sky, rising at 02:33 (PDT) – 3 hours and 46 minutes before the Sun – and reaching an altitude of 32° above the eastern horizon before fading from view as dawn breaks at around 05:17.
|
Name
4001 Ptolemaeus
|
Object type
Asteroid
|
Current position
| Computed for: | 27 August 2026 |
| Right ascension: | 07h02m [1] |
| Declination: | +19°30' [1] |
| Constellation: | Gemini |
| Magnitude: | 18.89 (V) [1] |
| Distance: | 2.90 AU 24.16 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