Neptune and 1 Ceres will share the same right ascension, with Neptune passing 8°37' to the north of 1 Ceres.
Neptune will be at mag 7.9, and 1 Ceres at mag 9.4, both in the constellation Aquarius.
A graph of the angular separation between Neptune and 1 Ceres around the time of closest approach is available here.
The positions of the two objects at the moment of conjunction will be as follows:
|Object||Right Ascension||Declination||Constellation||Magnitude||Angular Size|
The coordinates above are given in J2000.0. The pair will be at an angular separation of 58° from the Sun, which is in Sagittarius at this time of year.
|The sky on 10 January 2021|
27 days old
All times shown in EST.
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.
|28 Aug 2020||– 1 Ceres at opposition|
|27 Nov 2021||– 1 Ceres at opposition|
|10 Dec 2022||– 1 Ceres at perihelion|
|21 Mar 2023||– 1 Ceres at opposition|
The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.