509 Iolanda (Asteroid)
From South El Monte , 509 Iolanda is not observable – it will reach its highest point in the sky during daytime and is no higher than 19° above the horizon at dawn.
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Name
509 Iolanda
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Object type
Asteroid
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Current position
| Computed for: | 31 October 2025 |
| Right ascension: | 11h53m [1] |
| Declination: | −09°11' [1] |
| Constellation: | Crater |
| Magnitude: | 14.74 (V) [1] |
| Distance: | 4.08 AU 33.93 lightmin [1] |
| Angular motion (speed): | 7.39 arcmin/day[1] |
| Angular motion (pos ang): | 281.2° |
Orbital elements [1]
| Semi-major axis: | 3.06 AU |
| Eccentricity: | 0.098020 |
| Inclination: | 15.41° |
| Longitude ascending node: | 217.47° |
| Argument of perihelion: | 155.74° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 101.86° |
| Absolute mag (H): | 8.42 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.76 AU |
| Aphelion: | 3.36 AU |
| Orbital period: | 5.36 years |