101128 1998 RX57 (Asteroid)
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From South El Monte , 101128 1998 RX57 is visible in the morning sky, becoming accessible around 22:56, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 03:55, 73° above your southern horizon. It will be lost to dawn twilight around 05:11, 66° above your south-western horizon.
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Name
101128 1998 RX57
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Object type
Asteroid
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Current position
| Computed for: | 04 November 2025 |
| Right ascension: | 06h59m [1] |
| Declination: | +17°27' [1] |
| Constellation: | Gemini |
| Magnitude: | 21.07 (V) [1] |
| Distance: | 2.16 AU 17.98 lightmin [1] |
| Angular motion (speed): | 13.85 arcmin/day[1] |
| Angular motion (pos ang): | 272.3° |
Orbital elements [1]
| Semi-major axis: | 2.41 AU |
| Eccentricity: | 0.173465 |
| Inclination: | 4.38° |
| Longitude ascending node: | 155.53° |
| Argument of perihelion: | 136.71° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 68.49° |
| Absolute mag (H): | 16.23 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 1.99 AU |
| Aphelion: | 2.83 AU |
| Orbital period: | 3.74 years |
Visibility from South El Monte
All times shown in South El Monte local time.