137373 1999 TD128 (Asteroid)
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From South El Monte , 137373 1999 TD128 will become visible at around 19:05 (PDT), 32° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 23:34.
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Name
137373 1999 TD128
|
Object type
Asteroid
|
Current position
| Computed for: | 25 October 2025 |
| Right ascension: | 20h06m [1] |
| Declination: | −23°26' [1] |
| Constellation: | Sagittarius |
| Magnitude: | 21.50 (V) [1] |
| Distance: | 2.15 AU 17.84 lightmin [1] |
| Angular motion (speed): | 15.25 arcmin/day[1] |
| Angular motion (pos ang): | 256.4° |
Orbital elements [1]
| Semi-major axis: | 2.22 AU |
| Eccentricity: | 0.104653 |
| Inclination: | 3.98° |
| Longitude ascending node: | 10.53° |
| Argument of perihelion: | 72.95° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 170.20° |
| Absolute mag (H): | 16.85 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 1.99 AU |
| Aphelion: | 2.46 AU |
| Orbital period: | 3.31 years |
Visibility from South El Monte
All times shown in South El Monte local time.