75456 1999 XR145 (Asteroid)
From South El Monte , 75456 1999 XR145 is visible in the dawn sky, rising at 03:37 (PDT) – 2 hours and 58 minutes before the Sun – and reaching an altitude of 23° above the eastern horizon before fading from view as dawn breaks at around 05:35.
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Name
75456 1999 XR145
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Object type
Asteroid
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Current position
| Computed for: | 18 September 2025 |
| Right ascension: | 09h13m [1] |
| Declination: | +12°04' [1] |
| Constellation: | Cancer |
| Magnitude: | 22.33 (V) [1] |
| Distance: | 4.05 AU 33.68 lightmin [1] |
| Angular motion (speed): | 6.69 arcmin/day[1] |
| Angular motion (pos ang): | 287.5° |
Orbital elements [1]
| Semi-major axis: | 2.56 AU |
| Eccentricity: | 0.319977 |
| Inclination: | 4.80° |
| Longitude ascending node: | 228.94° |
| Argument of perihelion: | 61.90° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 151.05° |
| Absolute mag (H): | 16.01 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 1.74 AU |
| Aphelion: | 3.38 AU |
| Orbital period: | 4.09 years |