203306 2001 ST291 (Asteroid)
From South El Monte , 203306 2001 ST291 is visible in the dawn sky, rising at 02:54 (PDT) and reaching an altitude of 39° above the eastern horizon before fading from view as dawn breaks at around 06:09.
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Name
203306 2001 ST291
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Object type
Asteroid
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Current position
| Computed for: | 01 November 2025 |
| Right ascension: | 11h15m [1] |
| Declination: | +09°18' [1] |
| Constellation: | Leo |
| Magnitude: | 21.68 (V) [1] |
| Distance: | 2.73 AU 22.68 lightmin [1] |
| Angular motion (speed): | 12.20 arcmin/day[1] |
| Angular motion (pos ang): | 285.4° |
Orbital elements [1]
| Semi-major axis: | 2.23 AU |
| Eccentricity: | 0.194301 |
| Inclination: | 9.35° |
| Longitude ascending node: | 113.44° |
| Argument of perihelion: | 286.07° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 1.22° |
| Absolute mag (H): | 16.71 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 1.79 AU |
| Aphelion: | 2.66 AU |
| Orbital period: | 3.32 years |