158 Koronis (Asteroid)
From South El Monte , 158 Koronis is visible in the morning sky, becoming accessible around 22:57, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 03:57, 73° above your southern horizon. It will be lost to dawn twilight around 05:34, 62° above your south-western horizon.
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Name
158 Koronis
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Object type
Asteroid
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Current position
| Computed for: | 16 September 2025 |
| Right ascension: | 02h47m [1] |
| Declination: | +17°31' [1] |
| Constellation: | Aries |
| Magnitude: | 13.95 (V) [1] |
| Distance: | 2.00 AU 16.65 lightmin [1] |
| Angular motion (speed): | 17.54 arcmin/day[1] |
| Angular motion (pos ang): | 253.5° |
Orbital elements [1]
| Semi-major axis: | 2.87 AU |
| Eccentricity: | 0.053300 |
| Inclination: | 1.01° |
| Longitude ascending node: | 277.65° |
| Argument of perihelion: | 147.39° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 279.12° |
| Absolute mag (H): | 9.36 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.72 AU |
| Aphelion: | 3.02 AU |
| Orbital period: | 4.86 years |