404 Arsinoe (Asteroid)
From South El Monte , 404 Arsinoe will become visible at around 17:50 (PST), 34° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 22:01.
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Name
404 Arsinoe
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Object type
Asteroid
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Current position
| Computed for: | 21 December 2025 |
| Right ascension: | 23h07m [1] |
| Declination: | −20°06' [1] |
| Constellation: | Aquarius |
| Magnitude: | 14.91 (V) [1] |
| Distance: | 3.15 AU 26.22 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 2.59 AU |
| Eccentricity: | 0.201610 |
| Inclination: | 14.10° |
| Longitude ascending node: | 92.47° |
| Argument of perihelion: | 120.51° |
| Epoch of elements: | 21 Nov 2025 |
| Mean Anomaly at epoch: | 123.87° |
| Absolute mag (H): | 9.10 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.07 AU |
| Aphelion: | 3.11 AU |
| Orbital period: | 4.17 years |