158 Koronis (Asteroid)
From South El Monte , 158 Koronis is visible in the evening sky, becoming accessible around 17:49 (PST), 54° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 19:53, 69° above your southern horizon. It will continue to be observable until around 00:41, when it sinks below 21° above your western horizon.
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Name
158 Koronis
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Object type
Asteroid
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Current position
| Computed for: | 19 December 2025 |
| Right ascension: | 01h57m [1] |
| Declination: | +13°03' [1] |
| Constellation: | Aries |
| Magnitude: | 13.97 (V) [1] |
| Distance: | 2.04 AU 16.95 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 2.87 AU |
| Eccentricity: | 0.053354 |
| Inclination: | 1.01° |
| Longitude ascending node: | 277.64° |
| Argument of perihelion: | 147.59° |
| Epoch of elements: | 21 Nov 2025 |
| Mean Anomaly at epoch: | 339.83° |
| Absolute mag (H): | 9.34 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.71 AU |
| Aphelion: | 3.02 AU |
| Orbital period: | 4.86 years |