99942 Apophis (Asteroid)
Finder chart
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From South El Monte , 99942 Apophis is not observable – it will reach its highest point in the sky during daytime and is no higher than 0° above the horizon at dusk.
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Name
99942 Apophis
|
Object type
Asteroid
|
Current position
| Computed for: | 13 December 2025 |
| Right ascension: | 18h30m [1] |
| Declination: | −21°43' [1] |
| Constellation: | Sagittarius |
| Magnitude: | 20.55 (V) [1] |
| Distance: | 1.66 AU 13.83 lightmin [1] |
| Angular motion (speed): | 39.67 arcmin/day[1] |
| Angular motion (pos ang): | 266.6° |
Orbital elements [1]
| Semi-major axis: | 0.92 AU |
| Eccentricity: | 0.191128 |
| Inclination: | 3.34° |
| Longitude ascending node: | 203.90° |
| Argument of perihelion: | 126.67° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 339.02° |
| Absolute mag (H): | 19.00 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 0.75 AU |
| Aphelion: | 1.10 AU |
| Orbital period: | 0.89 years |
Visibility from South El Monte
All times shown in South El Monte local time.
Events
| 13 Apr 2029 | – Asteroid 99942 Apophis at opposition |
Printable finder charts
