666 Desdemona (Asteroid)
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From South El Monte , 666 Desdemona is visible in the evening sky, becoming accessible around 19:56 (PDT), 34° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:00, 55° above your southern horizon. It will continue to be observable until around 03:10, when it sinks below 21° above your western horizon.
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Name
666 Desdemona
|
Object type
Asteroid
|
Current position
| Computed for: | 16 September 2025 |
| Right ascension: | 21h53m [1] |
| Declination: | −00°48' [1] |
| Constellation: | Aquarius |
| Magnitude: | 13.40 (V) [1] |
| Distance: | 1.17 AU 9.70 lightmin [1] |
| Angular motion (speed): | 35.82 arcmin/day[1] |
| Angular motion (pos ang): | 251.4° |
Orbital elements [1]
| Semi-major axis: | 2.59 AU |
| Eccentricity: | 0.236426 |
| Inclination: | 7.58° |
| Longitude ascending node: | 215.29° |
| Argument of perihelion: | 174.10° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 274.26° |
| Absolute mag (H): | 10.72 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 1.98 AU |
| Aphelion: | 3.21 AU |
| Orbital period: | 4.18 years |
Visibility from South El Monte
All times shown in South El Monte local time.