221 Eos (Asteroid)
From South El Monte , 221 Eos is not readily observable since it is very close to the Sun, at a separation of only 11° from it.
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Name
221 Eos
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Object type
Asteroid
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Current position
| Computed for: | 13 February 2026 |
| Right ascension: | 22h33m [1] |
| Declination: | −11°46' [1] |
| Constellation: | Aquarius |
| Magnitude: | 13.08 (V) [1] |
| Distance: | 3.67 AU 30.51 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 3.01 AU |
| Eccentricity: | 0.101059 |
| Inclination: | 10.89° |
| Longitude ascending node: | 141.71° |
| Argument of perihelion: | 192.48° |
| Epoch of elements: | 21 Nov 2025 |
| Mean Anomaly at epoch: | 348.95° |
| Absolute mag (H): | 7.71 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.71 AU |
| Aphelion: | 3.32 AU |
| Orbital period: | 5.23 years |