261 Prymno (Asteroid)
From South El Monte , 261 Prymno is visible in the evening sky, becoming accessible around 17:51 (PST), 50° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 20:15, 67° above your southern horizon. It will continue to be observable until around 00:59, when it sinks below 21° above your western horizon.
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Name
261 Prymno
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Object type
Asteroid
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Current position
| Computed for: | 22 December 2025 |
| Right ascension: | 02h31m [1] |
| Declination: | +11°23' [1] |
| Constellation: | Aries |
| Magnitude: | 13.44 (V) [1] |
| Distance: | 1.63 AU 13.52 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 2.33 AU |
| Eccentricity: | 0.090407 |
| Inclination: | 3.63° |
| Longitude ascending node: | 96.58° |
| Argument of perihelion: | 66.59° |
| Epoch of elements: | 21 Nov 2025 |
| Mean Anomaly at epoch: | 256.29° |
| Absolute mag (H): | 9.55 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.12 AU |
| Aphelion: | 2.54 AU |
| Orbital period: | 3.56 years |