404 Arsinoe (Asteroid)
From South El Monte , 404 Arsinoe is visible in the evening sky, becoming accessible around 17:55 (PST), 25° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 19:26, 29° above your southern horizon. It will continue to be observable until around 21:38, when it sinks below 21° above your south-western horizon.
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Name
404 Arsinoe
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Object type
Asteroid
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Current position
| Computed for: | 05 November 2025 |
| Right ascension: | 22h37m [1] |
| Declination: | −26°24' [1] |
| Constellation: | Piscis Austrinus |
| Magnitude: | 14.39 (V) [1] |
| Distance: | 2.47 AU 20.54 lightmin [1] |
| Angular motion (speed): | 12.88 arcmin/day[1] |
| Angular motion (pos ang): | 255.2° |
Orbital elements [1]
| Semi-major axis: | 2.59 AU |
| Eccentricity: | 0.201475 |
| Inclination: | 14.10° |
| Longitude ascending node: | 92.47° |
| Argument of perihelion: | 120.57° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 52.97° |
| Absolute mag (H): | 9.13 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.07 AU |
| Aphelion: | 3.11 AU |
| Orbital period: | 4.17 years |