101 Helena (Asteroid)
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From Cambridge , 101 Helena is not observable – it will reach its highest point in the sky during daytime and is no higher than 0° above the horizon at dawn.
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Name
101 Helena
|
Object type
Asteroid
|
Current position
| Computed for: | 15 April 2026 |
| Right ascension: | 23h09m [1] |
| Declination: | −07°33' [1] |
| Constellation: | Aquarius |
| Magnitude: | 13.33 (V) [1] |
| Distance: | 2.90 AU 24.14 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 2.58 AU |
| Eccentricity: | 0.140522 |
| Inclination: | 10.19° |
| Longitude ascending node: | 343.36° |
| Argument of perihelion: | 347.76° |
| Epoch of elements: | 21 Nov 2025 |
| Mean Anomaly at epoch: | 323.65° |
| Absolute mag (H): | 8.39 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.22 AU |
| Aphelion: | 2.95 AU |
| Orbital period: | 4.15 years |
Visibility from Cambridge
All times shown in Cambridge local time.