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°15' of each other. The Moon will be 25 days old.

From South El Monte , the pair will be visible in the dawn sky, rising at 03:40 (PDT) – 2 hours and 49 minutes before the Sun – and reaching an altitude of 23° above the south-eastern horizon before fading from view as dawn breaks at around 05:59.

The Moon will be at mag -11.2; and Saturn will be at mag 0.5. Both objects will lie in the constellation Capricornus.

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 20h46m00s 19°44'S Capricornus -11.2 30'03"7
Saturn 20h45m00s 18°29'S Capricornus 0.5 16"0

The coordinates above are given in J2000.0. The pair will be at an angular separation of 63° from the Sun, which is in Pisces at this time of year.

The sky on 30 Jun 2025

The sky on 30 June 2025
Sunrise
05:41
Sunset
20:07
Twilight ends
21:51
Twilight begins
03:56


Waxing Crescent

36%

5 days old

Planets
Rise Culm. Set
Mercury 07:44 14:43 21:42
Venus 03:01 09:51 16:40
Moon 11:11 17:34 23:48
Mars 10:22 16:52 23:22
Jupiter 05:24 12:34 19:45
Saturn 00:26 06:25 12:24
All times shown in PDT.

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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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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