57 Mnemosyne (Asteroid)
From South El Monte , 57 Mnemosyne will become visible at around 20:18 (PDT), 27° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 3 hours and 24 minutes after the Sun at 22:41.
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Name
57 Mnemosyne
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Object type
Asteroid
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Current position
| Computed for: | 01 September 2025 |
| Right ascension: | 14h51m [1] |
| Declination: | −07°07' [1] |
| Constellation: | Libra |
| Magnitude: | 13.44 (V) [1] |
| Distance: | 3.81 AU 31.70 lightmin [1] |
| Angular motion (speed): | 7.60 arcmin/day[1] |
| Angular motion (pos ang): | 272.5° |
Orbital elements [1]
| Semi-major axis: | 3.15 AU |
| Eccentricity: | 0.108336 |
| Inclination: | 15.23° |
| Longitude ascending node: | 198.90° |
| Argument of perihelion: | 210.92° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 152.49° |
| Absolute mag (H): | 6.98 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.81 AU |
| Aphelion: | 3.50 AU |
| Orbital period: | 5.60 years |