190 Ismene (Asteroid)
From South El Monte , 190 Ismene will become visible at around 19:57 (PDT), 34° above your south-western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 23:43.
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Name
190 Ismene
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Object type
Asteroid
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Current position
| Computed for: | 15 September 2025 |
| Right ascension: | 17h16m [1] |
| Declination: | −16°50' [1] |
| Constellation: | Ophiuchus |
| Magnitude: | 15.31 (V) [1] |
| Distance: | 4.60 AU 38.26 lightmin [1] |
| Angular motion (speed): | 5.31 arcmin/day[1] |
| Angular motion (pos ang): | 273.7° |
Orbital elements [1]
| Semi-major axis: | 3.99 AU |
| Eccentricity: | 0.168343 |
| Inclination: | 6.17° |
| Longitude ascending node: | 175.42° |
| Argument of perihelion: | 271.34° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 158.63° |
| Absolute mag (H): | 7.91 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 3.32 AU |
| Aphelion: | 4.67 AU |
| Orbital period: | 7.98 years |