1 Ceres (Dwarf planet)

© NASA/Dawn 2015

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From South El Monte , 1 Ceres is visible in the morning sky, becoming accessible around 23:43, when it reaches an altitude of 21° above your south-eastern horizon. It will then reach its highest point in the sky at 03:31, 48° above your southern horizon. It will be lost to dawn twilight around 05:21, 41° above your south-western horizon.

Name 1 Ceres
Object type Dwarf planet
Current position
Computed for:31 August 2025
Right ascension:01h18m [1]
Declination:−07°24' [1]
Constellation:Cetus
Magnitude:8.06 (V) [1]
Angular diameter:0.6 arcsec[1]
Distance:2.11 AU
17.52 lightmin [1]
Angular motion (speed):6.91 arcmin/day[1]
Angular motion (pos ang):222.9°
Orbital elements [1]
Semi-major axis:2.77 AU
Eccentricity:0.079311
Inclination:10.59°
Longitude ascending node:80.25°
Argument of perihelion:73.26°
Epoch of elements:25 January 2025
Mean Anomaly at epoch:167.29°
Absolute mag (H):3.34 [1]
Slope parameter (G):0.15 [1]
Derived quantities
Perihelion:2.55 AU
Aphelion:2.99 AU
Orbital period:4.60 years
Events
02 Oct 2025  –  1 Ceres at opposition
14 May 2026  –  1 Ceres at solar conjunction
07 Jan 2027  –  1 Ceres at opposition
13 Jul 2027  –  1 Ceres at perihelion
11 Sep 2027  –  1 Ceres at solar conjunction
06 May 2028  –  1 Ceres at opposition
26 Dec 2028  –  1 Ceres at solar conjunction
10 Aug 2029  –  1 Ceres at opposition
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