138 Tolosa (Asteroid)
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From South El Monte , 138 Tolosa is visible in the evening sky, becoming accessible around 18:22 (PST), 29° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:04, 81° above your southern horizon. It will continue to be observable until around 04:22, when it sinks below 21° above your western horizon.
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Name
138 Tolosa
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Object type
Asteroid
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Current position
| Computed for: | 31 January 2026 |
| Right ascension: | 07h57m [1] |
| Declination: | +25°13' [1] |
| Constellation: | Gemini |
| Magnitude: | 13.07 (V) [1] |
| Distance: | 1.87 AU 15.54 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 2.45 AU |
| Eccentricity: | 0.161886 |
| Inclination: | 3.20° |
| Longitude ascending node: | 54.69° |
| Argument of perihelion: | 261.11° |
| Epoch of elements: | 21 Nov 2025 |
| Mean Anomaly at epoch: | 142.30° |
| Absolute mag (H): | 9.02 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.05 AU |
| Aphelion: | 2.85 AU |
| Orbital period: | 3.84 years |
Visibility from South El Monte
All times shown in South El Monte local time.