540 Rosamunde (Asteroid)

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From South El Monte , 540 Rosamunde is not observable – it will reach its highest point in the sky during daytime and is no higher than 4° above the horizon at dusk.

Name 540 Rosamunde
Object type Asteroid
Current position
Computed for:06 July 2025
Right ascension:09h16m [1]
Declination:+12°39' [1]
Constellation:Cancer
Magnitude:15.43 (V) [1]
Distance:2.81 AU
23.33 lightmin [1]
Angular motion (speed):14.60 arcmin/day[1]
Angular motion (pos ang):284.5°
Orbital elements [1]
Semi-major axis:2.22 AU
Eccentricity:0.089350
Inclination:5.58°
Longitude ascending node:202.08°
Argument of perihelion:337.40°
Epoch of elements:25 January 2025
Mean Anomaly at epoch:289.87°
Absolute mag (H):10.77 [1]
Slope parameter (G):0.15 [1]
Derived quantities
Perihelion:2.02 AU
Aphelion:2.42 AU
Orbital period:3.31 years

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