390 Alma (Asteroid)
From South El Monte , 390 Alma is visible in the evening sky, becoming accessible around 19:54 (PDT), 35° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:00, 37° above your southern horizon. It will continue to be observable until around 00:03, when it sinks below 21° above your south-western horizon.
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Name
390 Alma
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Object type
Asteroid
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Current position
| Computed for: | 17 September 2025 |
| Right ascension: | 19h57m [1] |
| Declination: | −18°08' [1] |
| Constellation: | Sagittarius |
| Magnitude: | 15.31 (V) [1] |
| Distance: | 2.33 AU 19.34 lightmin [1] |
| Angular motion (speed): | 13.24 arcmin/day[1] |
| Angular motion (pos ang): | 245.6° |
Orbital elements [1]
| Semi-major axis: | 2.65 AU |
| Eccentricity: | 0.131815 |
| Inclination: | 12.14° |
| Longitude ascending node: | 305.09° |
| Argument of perihelion: | 192.16° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 122.47° |
| Absolute mag (H): | 10.22 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.30 AU |
| Aphelion: | 3.00 AU |
| Orbital period: | 4.32 years |