101280 1998 SD117 (Asteroid)
From South El Monte , 101280 1998 SD117 will become visible at around 19:57 (PDT), 32° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:10.
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Name
101280 1998 SD117
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Object type
Asteroid
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Current position
| Computed for: | 15 September 2025 |
| Right ascension: | 18h00m [1] |
| Declination: | −22°13' [1] |
| Constellation: | Sagittarius |
| Magnitude: | 20.14 (V) [1] |
| Distance: | 1.69 AU 14.01 lightmin [1] |
| Angular motion (speed): | 20.79 arcmin/day[1] |
| Angular motion (pos ang): | 264.7° |
Orbital elements [1]
| Semi-major axis: | 2.28 AU |
| Eccentricity: | 0.154653 |
| Inclination: | 4.00° |
| Longitude ascending node: | 284.54° |
| Argument of perihelion: | 76.57° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 245.70° |
| Absolute mag (H): | 16.16 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 1.93 AU |
| Aphelion: | 2.63 AU |
| Orbital period: | 3.44 years |