A parade of 5 planets in the evening sky

Dominic Ford, Editor
From the Inner Planets feed


All five of the planets that are visible to the unaided eye planets will be above the horizon at the same time, shortly after sunset. However, Jupiter, Saturn and Mercury will be very tricky to see since they will set very shortly after the Sun. To see them you will need to have an exceptionally flat western horizon, for example by observing over an ocean horizon at the coast. At sunset, they will have altitudes of 5.2°, 7.9° and 7.0° respectively.

Additionally, Mars and Venus will be quite tricky to see since they will also set shortly after the Sun. They will also be visible only if you have a flat western horizon, clear of obstructions such as buildings or trees. At sunset, they will have altitudes of 9.7° and 10.6° respectively.

It is relatively rare for all of the planets to be aligned in one hemisphere so as to all be above the horizon at the same moment. Such an alignment between the five planets which are visible to the unaided eye happens roughly once every 6 years, while an alignment that also includes Uranus and Neptune, which require binoculars or a telescope to be seen, happens around once every 70 years.

However, since the planets in the outer solar system – especially Saturn, Uranus and Neptune – move quite slowly through the constellations, such alignments can occur multiple times in quick succession, or not at all for over 100 years.

The positions of all the planets at sunset will be as follows:

Planet Altitude
at sunset
Direction
at sunset
Planet
sets at
Mag Constellation
Jupiter 5.2° west 19:21 -1.7 Virgo
Saturn 7.9° west 19:36 0.8 Virgo
Mercury 7.0° west 19:32 0.0 Virgo
Mars 9.7° west 19:47 1.6 Virgo
Venus 10.6° south-west 19:53 -3.9 Virgo

Celestial coordinates

The positions of each of the planets will be:

Object Right Ascension Declination Constellation Magnitude Angular Size
Venus 13h09m 6°48'S Virgo -3.9 11"6
Jupiter 12h23m 1°22'S Virgo -1.7 30"1
Mercury 13h46m 13°55'S Virgo 0.0 6"8
Saturn 12h45m 2°29'S Virgo 0.8 15"7
Mars 13h35m 9°45'S Virgo 1.6 3"8

The coordinates above are given in J2000.0.

Next/previous occurrences

« Previous Objects simultaneously visible Next »
21 Dec 2022 All seven planets 07 Jan 2123
23 Nov 2039 All five planets that are
visible to the unaided eye
22 Aug 2042

The sky on 2 Jul 2024

The sky on 2 July 2024
Sunrise
05:09
Sunset
20:24
Twilight ends
22:37
Twilight begins
02:55


Waning Crescent

10%

26 days old

Planets
Rise Culm. Set
Mercury 06:39 14:09 21:38
Venus 05:45 13:20 20:55
Moon 01:56 09:40 17:38
Mars 01:54 08:58 16:02
Jupiter 03:00 10:26 17:51
Saturn 23:43 05:23 11:04
All times shown in EDT.

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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