137644 1999 WJ15 (Asteroid)
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From South El Monte , 137644 1999 WJ15 is visible in the morning sky, becoming accessible around 20:13, when it reaches an altitude of 21° above your eastern horizon. It will then reach its highest point in the sky at 01:07, 71° above your southern horizon. It will be lost to dawn twilight around 05:52, 23° above your western horizon.
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Name
137644 1999 WJ15
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Object type
Asteroid
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Current position
| Computed for: | 07 January 2026 |
| Right ascension: | 08h22m [1] |
| Declination: | +15°19' [1] |
| Constellation: | Cancer |
| Magnitude: | 20.46 (V) [1] |
| Distance: | 1.86 AU 15.47 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 2.35 AU |
| Eccentricity: | 0.195563 |
| Inclination: | 2.79° |
| Longitude ascending node: | 228.70° |
| Argument of perihelion: | 72.08° |
| Epoch of elements: | 21 Nov 2025 |
| Mean Anomaly at epoch: | 163.40° |
| Absolute mag (H): | 16.38 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 1.89 AU |
| Aphelion: | 2.81 AU |
| Orbital period: | 3.61 years |
Visibility from South El Monte
All times shown in South El Monte local time.