584 Semiramis (Asteroid)
From South El Monte , 584 Semiramis is visible in the evening sky, becoming accessible around 20:00 (PDT), 40° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:57, 62° above your southern horizon. It will continue to be observable until around 03:28, when it sinks below 21° above your western horizon.
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Name
584 Semiramis
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Object type
Asteroid
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Current position
| Computed for: | 13 September 2025 |
| Right ascension: | 21h39m [1] |
| Declination: | +06°12' [1] |
| Constellation: | Pegasus |
| Magnitude: | 10.45 (V) [1] |
| Distance: | 0.91 AU 7.55 lightmin [1] |
| Angular motion (speed): | 51.01 arcmin/day[1] |
| Angular motion (pos ang): | 239.6° |
Orbital elements [1]
| Semi-major axis: | 2.37 AU |
| Eccentricity: | 0.233202 |
| Inclination: | 10.72° |
| Longitude ascending node: | 281.99° |
| Argument of perihelion: | 85.39° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 281.63° |
| Absolute mag (H): | 8.49 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 1.82 AU |
| Aphelion: | 2.93 AU |
| Orbital period: | 3.66 years |