4035 Thestor (Asteroid)
From South El Monte , 4035 Thestor is visible in the evening sky, becoming accessible around 20:09 (PDT), 31° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:08, 49° above your southern horizon. It will continue to be observable until around 02:59, when it sinks below 21° above your south-western horizon.
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Name
4035 Thestor
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Object type
Asteroid
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Current position
| Computed for: | 29 March 2026 |
| Right ascension: | 10h46m [1] |
| Declination: | −06°32' [1] |
| Constellation: | Sextans |
| Magnitude: | 16.77 (V) [1] |
| Distance: | 4.37 AU 36.37 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 5.27 AU |
| Eccentricity: | 0.056130 |
| Inclination: | 12.13° |
| Longitude ascending node: | 233.70° |
| Argument of perihelion: | 199.85° |
| Epoch of elements: | 21 Nov 2025 |
| Mean Anomaly at epoch: | 78.92° |
| Absolute mag (H): | 9.54 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 4.98 AU |
| Aphelion: | 5.57 AU |
| Orbital period: | 12.12 years |