17 Thetis (Asteroid)

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From South El Monte , 17 Thetis is visible in the dawn sky, rising at 00:43 (PDT) and reaching an altitude of 58° above the eastern horizon before fading from view as dawn breaks at around 05:35.

Name 17 Thetis
Object type Asteroid
Current position
Computed for:18 September 2025
Right ascension:06h39m [1]
Declination:+19°08' [1]
Constellation:Gemini
Magnitude:13.45 (V) [1]
Distance:2.87 AU
23.83 lightmin [1]
Angular motion (speed):10.73 arcmin/day[1]
Angular motion (pos ang):268.3°
Orbital elements [1]
Semi-major axis:2.47 AU
Eccentricity:0.132109
Inclination:5.59°
Longitude ascending node:125.53°
Argument of perihelion:135.72°
Epoch of elements:25 January 2025
Mean Anomaly at epoch:116.80°
Absolute mag (H):7.92 [1]
Slope parameter (G):0.15 [1]
Derived quantities
Perihelion:2.14 AU
Aphelion:2.80 AU
Orbital period:3.88 years

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