102554 1999 US21 (Asteroid)
From Cambridge , 102554 1999 US21 is not observable – it will reach its highest point in the sky during daytime and is no higher than 2° above the horizon at dusk.
Name
102554 1999 US21
|
Object type
Asteroid
|
Computed for: | 28 September 2024 |
Right ascension: | 14h49m [1] |
Declination: | −18°46' [1] |
Constellation: | Libra |
Magnitude: | 21.86 (V) [1] |
Distance: | 2.98 AU 24.76 lightmin [1] |
Angular motion (speed): | 13.18 arcmin/day[1] |
Angular motion (pos ang): | 293.9° |
Semi-major axis: | 2.44 AU |
Eccentricity: | 0.115267 |
Inclination: | 6.84° |
Longitude ascending node: | 35.56° |
Argument of perihelion: | 139.03° |
Epoch of elements: | 17 October 2024 |
Mean Anomaly at epoch: | 60.63° |
Absolute mag (H): | 16.79 [1] |
Slope parameter (G): | 0.15 [1] |
Perihelion: | 2.16 AU |
Aphelion: | 2.72 AU |
Orbital period: | 3.82 years |
All times shown in Cambridge local time.