3391 Sinon (Asteroid)
From South El Monte , 3391 Sinon is visible in the evening sky, becoming accessible around 20:12 (PDT), 36° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:15, 58° above your southern horizon. It will continue to be observable until around 03:34, when it sinks below 21° above your western horizon.
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Name
3391 Sinon
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Object type
Asteroid
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Current position
| Computed for: | 01 April 2026 |
| Right ascension: | 11h06m [1] |
| Declination: | +02°13' [1] |
| Constellation: | Leo |
| Magnitude: | 17.49 (V) [1] |
| Distance: | 4.30 AU 35.74 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 5.29 AU |
| Eccentricity: | 0.082667 |
| Inclination: | 14.88° |
| Longitude ascending node: | 341.06° |
| Argument of perihelion: | 104.98° |
| Epoch of elements: | 21 Nov 2025 |
| Mean Anomaly at epoch: | 65.55° |
| Absolute mag (H): | 10.34 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 4.85 AU |
| Aphelion: | 5.73 AU |
| Orbital period: | 12.17 years |