101 Helena (Asteroid)
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From South El Monte , 101 Helena is not observable – it will reach its highest point in the sky during daytime and is no higher than 13° above the horizon at dusk.
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Name
101 Helena
|
Object type
Asteroid
|
Current position
| Computed for: | 18 September 2025 |
| Right ascension: | 15h54m [1] |
| Declination: | −29°42' [1] |
| Constellation: | Scorpius |
| Magnitude: | 13.47 (V) [1] |
| Distance: | 2.59 AU 21.51 lightmin [1] |
| Angular motion (speed): | 13.32 arcmin/day[1] |
| Angular motion (pos ang): | 283.7° |
Orbital elements [1]
| Semi-major axis: | 2.58 AU |
| Eccentricity: | 0.140627 |
| Inclination: | 10.19° |
| Longitude ascending node: | 343.37° |
| Argument of perihelion: | 347.82° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 252.39° |
| Absolute mag (H): | 8.42 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.22 AU |
| Aphelion: | 2.95 AU |
| Orbital period: | 4.15 years |
Visibility from South El Monte
All times shown in South El Monte local time.