140 Siwa (Asteroid)
From Cambridge , 140 Siwa will become visible at around 21:10 (EDT), 33° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 00:26.
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Name
140 Siwa
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Object type
Asteroid
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Current position
| Computed for: | 09 May 2025 |
| Right ascension: | 07h18m [1] |
| Declination: | +23°00' [1] |
| Constellation: | Gemini |
| Magnitude: | 14.78 (V) [1] |
| Distance: | 3.72 AU 30.94 lightmin [1] |
| Angular motion (speed): | 7.47 arcmin/day[1] |
| Angular motion (pos ang): | 274.3° |
Orbital elements [1]
| Semi-major axis: | 2.73 AU |
| Eccentricity: | 0.216803 |
| Inclination: | 3.19° |
| Longitude ascending node: | 107.07° |
| Argument of perihelion: | 197.17° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 155.83° |
| Absolute mag (H): | 8.48 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.14 AU |
| Aphelion: | 3.33 AU |
| Orbital period: | 4.52 years |