221 Eos (Asteroid)
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From Cambridge , 221 Eos is visible in the evening sky, becoming accessible around 21:04 (EDT), 28° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:25, 31° above your southern horizon. It will continue to be observable until around 00:57, when it sinks below 21° above your south-western horizon.
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Name
221 Eos
|
Object type
Asteroid
|
Current position
| Computed for: | 12 August 2025 |
| Right ascension: | 19h08m [1] |
| Declination: | −15°53' [1] |
| Constellation: | Sagittarius |
| Magnitude: | 12.02 (V) [1] |
| Distance: | 1.86 AU 15.43 lightmin [1] |
| Angular motion (speed): | 19.27 arcmin/day[1] |
| Angular motion (pos ang): | 272.1° |
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 |
Visibility from Cambridge
All times shown in Cambridge local time.