In practice, however, 1 Ceres's orbit is very close to circular; its distance from the Sun only varies by about 17.0% between perihelion and aphelion. This means that the difference in the amount of heat and light it receives from the Sun between aphelion and perihelion is extremely small.
Finding 1 Ceres
1 Ceres's distance from the Sun doesn't affect its appearance. From Seattle, at the moment of aphelion it will not be observable – it will reach its highest point in the sky during daytime and will be 12° below the horizon at dawn.
The position of 1 Ceres at the moment it passes aphelion will be:
|Object||Right Ascension||Declination||Constellation||Magnitude||Angular Size|
The coordinates above are given in J2000.0.
|The sky on 01 April 2025|
3 days old
All times shown in PDT.
The circumstances of this event were computed using the DE430 planetary ephemeris published by the Jet Propulsion Laboratory (JPL).
This event was automatically generated by searching the ephemeris for planetary alignments which are of interest to amateur astronomers, and the text above was generated based on an estimate of your location.
|06 Jul 2024||– 1 Ceres at opposition|
|03 Oct 2025||– 1 Ceres at opposition|
|08 Jan 2027||– 1 Ceres at opposition|
|18 Jul 2027||– 1 Ceres at perihelion|
© NASA/Dawn 2015