© NASA/Cassini

Saturn enters retrograde motion

Dominic Ford, Editor
From the Outer Planets feed

Objects: Saturn
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Saturn will enter retrograde motion, halting its usual eastward movement through the constellations, and turning to move westwards instead. This reversal of direction is a phenomenon that all the solar system's outer planets periodically undergo, a few months before they reach opposition.

The retrograde motion is caused by the Earth's own motion around the Sun. As the Earth circles the Sun, our perspective changes, and this causes the apparent positions of objects to move from side-to-side in the sky with a one-year period. This nodding motion is super-imposed on the planet's long-term eastward motion through the constellations.

The diagram below illustrates this. The grey dashed arrow shows the Earth's sight-line to the planet, and the diagram on the right shows the planet's apparently movement across the sky as seen from the Earth:


The retrograde motion of a planet in the outer solar system. Not drawn to scale.

2026 apparition of Saturn

26 Jul 2026 – Saturn enters retrograde motion
04 Oct 2026 – Saturn at opposition
10 Dec 2026 – Saturn ends retrograde motion

Observing Saturn

Saturn enters retrograde motion as its 2026 apparition gets underway, although it has already been visible for some weeks in the pre-dawn sky.

Its celestial coordinates as it enters retrograde motion will be:

Object Right Ascension Declination Constellation Magnitude Angular Size
Saturn 00h56m40s 3°21'N Pisces 0.4 18.3"

The coordinates above are given in J2000.0.

From Fairfield , it will be visible in the dawn sky, rising at 23:20 (EDT) and reaching an altitude of 51° above the southern horizon before fading from view as dawn breaks around 05:07.

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Over the following weeks, Saturn will reach its highest point in the sky four minutes earlier each night, gradually becoming visible in the evening sky, as well as the pre-dawn sky, as it approaches opposition.

The sky on 26 July 2026
Sunrise
05:43
Sunset
20:19
Twilight ends
22:15
Twilight begins
03:47

12-day old moon
Waxing Gibbous

95%

12 days old

Planets
Rise Culm. Set
Mercury 04:34 11:47 19:01
Venus 09:34 15:55 22:16
Moon 18:44 23:04 03:26
Mars 02:20 09:51 17:21
Jupiter 05:54 13:09 20:24
Saturn 23:20 05:35 11:50
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.

Related news

21 Sep 2025  –  Saturn at opposition
04 Oct 2026  –  Saturn at opposition
17 Oct 2027  –  Saturn at opposition
30 Oct 2028  –  Saturn at opposition

Image credit

© NASA/Cassini

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41.14°N
73.26°W
EDT

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