© NASA/Dawn 2015

1 Ceres at aphelion

Dominic Ford, Editor
From the Dwarf Planets feed

Objects: 1 Ceres
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The sky at

1 Ceres's 4.6-year orbit around the Sun will carry it to its furthest point to the Sun – its aphelion – at a distance of 2.99 AU.

In practice, however, 1 Ceres's orbit is very close to circular; its distance from the Sun only varies by about 17.1% 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 San Diego, at the moment of aphelion it will not be observable – it will reach its highest point in the sky during daytime and will be 5° below the horizon at dawn.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.

A chart of the path of 1 Ceres across the sky in 2025 can be found here, and a chart of its rising and setting times here.

The position of 1 Ceres at the moment it passes aphelion will be:

Object Right Ascension Declination Constellation Magnitude Angular Size
1 Ceres 23h13m20s 13°37'S Aquarius 9.2 0.0"

The coordinates above are given in J2000.0.

The sky on 31 Mar 2025

The sky on 31 March 2025
Twilight ends
Twilight begins

2-day old moon
Waxing Crescent


2 days old

Rise Culm. Set
Mercury 05:57 12:02 18:08
Venus 05:32 11:49 18:06
Moon 07:51 14:58 22:15
Mars 12:41 19:51 03:01
Jupiter 10:03 17:07 00:12
Saturn 06:00 11:52 17:44
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.

Related news

06 Jul 2024  –  1 Ceres at opposition
02 Oct 2025  –  1 Ceres at opposition
07 Jan 2027  –  1 Ceres at opposition
06 May 2028  –  1 Ceres at opposition

Image credit

© NASA/Dawn 2015



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