A parade of 5 planets in the morning 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 before sunrise. However, Venus will be very tricky to see since it will rise very shortly before the Sun. To see it you will need to have an exceptionally flat eastern horizon, for example by observing over an ocean horizon at the coast. At sunrise, it will have an altitude of 6.6°.

Additionally, Mercury and Mars will be quite tricky to see since they will also rise shortly before the Sun. They will also be visible only if you have a flat eastern horizon, clear of obstructions such as buildings or trees. At sunrise, they will have altitudes of 8.9° and 14.2° 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 sunrise will be as follows:

Planet Altitude
at sunrise
Direction
at sunrise
Planet
rises at
Mag Constellation
Venus 6.6° east 04:47 -3.9 Aquarius
Mercury 8.9° east 04:33 0.2 Aquarius
Mars 14.2° south-east 03:58 1.2 Capricornus
Saturn 24.5° south 01:46 0.4 Sagittarius
Jupiter 24.6° south 00:48 -2.2 Sagittarius

Celestial coordinates

The positions of each of the planets will be:

Object Right Ascension Declination Constellation Magnitude Angular Size
Venus 23h02m 7°34'S Aquarius -3.9 10"8
Jupiter 18h11m 22°59'S Sagittarius -2.2 36"8
Mercury 23h27m 5°32'S Aquarius 0.2 7"7
Saturn 19h17m 21°46'S Sagittarius 0.4 16"1
Mars 21h45m 14°47'S Capricornus 1.2 4"6

The coordinates above are given in J2000.0.

Next/previous occurrences

« Previous Objects simultaneously visible Next »
All seven planets 22 Jan 1984
01 Dec 1953 All five planets that are
visible to the unaided eye
16 Aug 1966

The sky on 17 Jul 2024

The sky on 17 July 2024
Sunrise
05:20
Sunset
20:17
Twilight ends
22:22
Twilight begins
03:14


Waxing Gibbous

85%

12 days old

Planets
Rise Culm. Set
Mercury 07:39 14:36 21:32
Venus 06:19 13:39 20:59
Moon 17:18 21:41 01:58
Mars 01:26 08:42 15:58
Jupiter 02:12 09:40 17:08
Saturn 22:43 04:23 10:03
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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