1009 Sirene (Asteroid)
From South El Monte , 1009 Sirene is visible in the morning sky, becoming accessible around 23:28, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 04:16, 69° above your southern horizon. It will be lost to dawn twilight around 04:31, 68° above your southern horizon.
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Name
1009 Sirene
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Object type
Asteroid
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Current position
| Computed for: | 03 July 2025 |
| Right ascension: | 22h11m [1] |
| Declination: | +13°08' [1] |
| Constellation: | Pegasus |
| Magnitude: | 18.07 (V) [1] |
| Distance: | 1.59 AU 13.18 lightmin [1] |
| Angular motion (speed): | 26.62 arcmin/day[1] |
| Angular motion (pos ang): | 252.4° |
Orbital elements [1]
| Semi-major axis: | 2.63 AU |
| Eccentricity: | 0.452977 |
| Inclination: | 15.72° |
| Longitude ascending node: | 229.28° |
| Argument of perihelion: | 186.62° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 276.03° |
| Absolute mag (H): | 14.20 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 1.44 AU |
| Aphelion: | 3.82 AU |
| Orbital period: | 4.26 years |