397 Vienna (Asteroid)
From South El Monte , 397 Vienna is visible in the evening sky, becoming accessible around 20:47 (PDT), 37° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:55, 61° above your southern horizon. It will continue to be observable until around 04:22, when it sinks below 21° above your western horizon.
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Name
397 Vienna
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Object type
Asteroid
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Current position
| Computed for: | 11 August 2026 |
| Right ascension: | 20h26m [1] |
| Declination: | +05°10' [1] |
| Constellation: | Delphinus |
| Magnitude: | 12.11 (V) [1] |
| Distance: | 1.20 AU 9.94 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 2.64 AU |
| Eccentricity: | 0.247242 |
| Inclination: | 12.87° |
| Longitude ascending node: | 227.88° |
| Argument of perihelion: | 139.92° |
| Epoch of elements: | 9 Jun 2026 |
| Mean Anomaly at epoch: | 312.23° |
| Absolute mag (H): | 9.35 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 1.98 AU |
| Aphelion: | 3.29 AU |
| Orbital period: | 4.28 years |
Source