390 Alma (Asteroid)
From South El Monte , 390 Alma will become visible at around 17:50 (PST), 29° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 3 hours and 47 minutes after the Sun at 20:32.
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Name
390 Alma
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Object type
Asteroid
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Current position
| Computed for: | 20 December 2025 |
| Right ascension: | 21h09m [1] |
| Declination: | −11°45' [1] |
| Constellation: | Aquarius |
| Magnitude: | 16.14 (V) [1] |
| Distance: | 3.56 AU 29.57 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 2.65 AU |
| Eccentricity: | 0.132000 |
| Inclination: | 12.14° |
| Longitude ascending node: | 305.09° |
| Argument of perihelion: | 192.20° |
| Epoch of elements: | 21 Nov 2025 |
| Mean Anomaly at epoch: | 190.89° |
| Absolute mag (H): | 10.20 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.30 AU |
| Aphelion: | 3.00 AU |
| Orbital period: | 4.32 years |