128 Nemesis (Asteroid)
From South El Monte , 128 Nemesis is visible in the morning sky, becoming accessible around 02:03, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 04:29, 31° above your southern horizon. It will be lost to dawn twilight around 04:35, 31° above your southern horizon.
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Name
128 Nemesis
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Object type
Asteroid
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Current position
| Computed for: | 22 May 2026 |
| Right ascension: | 19h37m [1] |
| Declination: | −24°26' [1] |
| Constellation: | Sagittarius |
| Magnitude: | 12.33 (V) [1] |
| Distance: | 2.04 AU 16.97 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 2.75 AU |
| Eccentricity: | 0.127006 |
| Inclination: | 6.25° |
| Longitude ascending node: | 76.16° |
| Argument of perihelion: | 302.81° |
| Epoch of elements: | 21 Nov 2025 |
| Mean Anomaly at epoch: | 231.89° |
| Absolute mag (H): | 7.67 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.40 AU |
| Aphelion: | 3.10 AU |
| Orbital period: | 4.56 years |