Close approach of the Moon and Saturn

Dominic Ford, Editor
From the Appulses feed

Tags: Appulse

The Moon and Saturn will make a close approach, passing within 1°44' of each other. The Moon will be 27 days old.

From Fairfield however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be no higher than 9° above the horizon at dawn.

The Moon will be at mag -10.0; and Saturn will be at mag 0.5. Both objects will lie in the constellation Sagittarius.

They will be too widely separated to fit within the field of view of a telescope, but will be visible to the naked eye or through a pair of binoculars.

At around the same time, the pair will also share the same right ascension – called a conjunction.

A graph of the angular separation between the Moon and Saturn around the time of closest approach is available here.

The positions of the pair at the moment of closest approach will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 19h56m40s 22°30'S Sagittarius -10.0 30'12"2
Saturn 19h55m50s 20°46'S Sagittarius 0.5 15"3

The coordinates above are given in J2000.0. The pair will be at an angular separation of 34° from the Sun, which is in Aquarius at this time of year.

The sky on 20 Feb 2020

The sky on 20 February 2020
Sunrise
06:39
Sunset
17:32
Twilight ends
19:04
Twilight begins
05:07


Waning Crescent

6%

27 days old

Planets
Rise Culm. Set
Mercury 06:51 12:39 18:27
Venus 08:20 14:45 21:10
Moon 05:13 09:51 14:31
Mars 03:31 08:04 12:38
Jupiter 04:29 09:08 13:48
Saturn 05:02 09:48 14:34
All times shown in EST.

Source

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.

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29 Sep 2020  –  Saturn ends retrograde motion

Image credit

The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.

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