221 Eos (Asteroid)
From South El Monte , 221 Eos is visible in the morning sky, becoming accessible around 21:50, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 01:18, 43° above your southern horizon. It will be lost to dawn twilight around 04:34, 23° above your south-western horizon.
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Name
221 Eos
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Object type
Asteroid
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Current position
| Computed for: | 08 July 2025 |
| Right ascension: | 19h32m [1] |
| Declination: | −12°39' [1] |
| Constellation: | Sagittarius |
| Magnitude: | 11.60 (V) [1] |
| Distance: | 1.78 AU 14.77 lightmin [1] |
| Angular motion (speed): | 20.69 arcmin/day[1] |
| Angular motion (pos ang): | 270.3° |
Orbital elements [1]
| Semi-major axis: | 3.01 AU |
| Eccentricity: | 0.101244 |
| Inclination: | 10.89° |
| Longitude ascending node: | 141.72° |
| Argument of perihelion: | 192.51° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 292.39° |
| Absolute mag (H): | 7.76 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.71 AU |
| Aphelion: | 3.32 AU |
| Orbital period: | 5.23 years |