57 Mnemosyne (Asteroid)
From South El Monte , 57 Mnemosyne is visible in the evening sky, becoming accessible around 20:50 (PDT), 48° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:09, 53° above your southern horizon. It will continue to be observable until around 02:13, when it sinks below 21° above your western horizon.
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Name
57 Mnemosyne
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Object type
Asteroid
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Current position
| Computed for: | 09 August 2026 |
| Right ascension: | 18h32m [1] |
| Declination: | −02°42' [1] |
| Constellation: | Serpens Cauda |
| Magnitude: | 12.22 (V) [1] |
| Distance: | 2.48 AU 20.59 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 3.16 AU |
| Eccentricity: | 0.107867 |
| Inclination: | 15.23° |
| Longitude ascending node: | 198.88° |
| Argument of perihelion: | 210.99° |
| Epoch of elements: | 9 Jun 2026 |
| Mean Anomaly at epoch: | 240.32° |
| Absolute mag (H): | 6.94 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.82 AU |
| Aphelion: | 3.50 AU |
| Orbital period: | 5.61 years |
Source