221 Eos (Asteroid)
From South El Monte , 221 Eos is visible in the evening sky, becoming accessible around 20:19 (PDT), 36° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 21:13, 38° above your southern horizon. It will continue to be observable until around 00:19, when it sinks below 21° above your south-western horizon.
Name
221 Eos
|
Object type
Asteroid
|
Computed for: | 31 August 2025 |
Right ascension: | 19h03m [1] |
Declination: | −17°35' [1] |
Constellation: | Sagittarius |
Magnitude: | 12.38 (V) [1] |
Distance: | 2.01 AU 16.76 lightmin [1] |
Angular motion (speed): | 17.55 arcmin/day[1] |
Angular motion (pos ang): | 272.9° |
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] |
Perihelion: | 2.71 AU |
Aphelion: | 3.32 AU |
Orbital period: | 5.23 years |
All times shown in South El Monte local time.