259 Aletheia (Asteroid)
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From Cambridge , 259 Aletheia is visible in the morning sky, becoming accessible around 00:40, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 03:10, 31° above your southern horizon. It will be lost to dawn twilight around 04:23, 29° above your southern horizon.
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Name
259 Aletheia
|
Object type
Asteroid
|
Current position
| Computed for: | 30 April 2025 |
| Right ascension: | 17h00m [1] |
| Declination: | −16°13' [1] |
| Constellation: | Ophiuchus |
| Magnitude: | 12.10 (V) [1] |
| Distance: | 1.85 AU 15.42 lightmin [1] |
| Angular motion (speed): | 20.10 arcmin/day[1] |
| Angular motion (pos ang): | 287.4° |
Orbital elements [1]
| Semi-major axis: | 3.13 AU |
| Eccentricity: | 0.129832 |
| Inclination: | 10.81° |
| Longitude ascending node: | 86.78° |
| Argument of perihelion: | 166.40° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 335.06° |
| Absolute mag (H): | 7.83 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.73 AU |
| Aphelion: | 3.54 AU |
| Orbital period: | 5.55 years |
Visibility from Cambridge
All times shown in Cambridge local time.