540 Rosamunde (Asteroid)
From South El Monte , 540 Rosamunde is visible in the dawn sky, rising at 01:28 (PDT) and reaching an altitude of 35° above the southern horizon before fading from view as dawn breaks at around 05:40.
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Name
540 Rosamunde
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Object type
Asteroid
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Current position
| Computed for: | 30 March 2026 |
| Right ascension: | 18h18m [1] |
| Declination: | −18°44' [1] |
| Constellation: | Sagittarius |
| Magnitude: | 14.91 (V) [1] |
| Distance: | 1.79 AU 14.93 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 2.22 AU |
| Eccentricity: | 0.089152 |
| Inclination: | 5.58° |
| Longitude ascending node: | 202.07° |
| Argument of perihelion: | 337.60° |
| Epoch of elements: | 21 Nov 2025 |
| Mean Anomaly at epoch: | 19.14° |
| Absolute mag (H): | 10.76 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.02 AU |
| Aphelion: | 2.42 AU |
| Orbital period: | 3.31 years |