Mars at perihelion

Dominic Ford, Editor
From the Outer Planets feed


Objects: Mars

Mars's 687-day orbit around the Sun will carry it to its closest point to the Sun – its perihelion – at a distance of 1.38 AU.

Unlike most of the planets, which follow almost exactly circular orbits around the Sun which only vary in their distance from the Sun by a few percent, Mars has a significantly elliptical orbit. Its distance from the Sun varies between 1.38 AU and 1.67 AU – a variation of over 20% – meaning that it receives 31% less heat and light from the Sun at aphelion as compared to perihelion.

Finding Mars

Mars's distance from the Sun doesn't affect its appearance. From South El Monte, at the moment of perihelion it will be visible in the morning sky, becoming accessible around 21:41, when it reaches an altitude of 7° above your eastern horizon. It will then reach its highest point in the sky at 02:39, 47° above your southern horizon. It will be lost to dawn twilight around 06:03, 25° above your south-western horizon.

A chart of the path of Mars across the sky in 1956 can be found here, and a chart of its rising and setting times here.

The position of Mars at the moment it passes perihelion will be:

Object Right Ascension Declination Constellation Magnitude Angular Size
Mars 23h45m50s 8°16'S Aquarius -2.5 23.6"

The coordinates above are given in J2000.0.

The sky on 10 Jun 2026

The sky on 10 June 2026
Sunrise
05:37
Sunset
20:02
Twilight ends
21:47
Twilight begins
03:53


Waning Crescent

18%

25 days old

Planets
Rise Culm. Set
Mercury 07:18 14:33 21:48
Venus 08:21 15:30 22:40
Moon 02:03 08:34 15:15
Mars 03:44 10:33 17:21
Jupiter 08:21 15:25 22:30
Saturn 02:15 08:26 14:36
All times shown in PDT.

Source

The circumstances of this event were computed using the DE440 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

10 Aug 1956  –  Mars enters retrograde motion
06 Sep 1956  –  Mars at perigee
10 Sep 1956  –  Mars at opposition
10 Oct 1956  –  Mars ends retrograde motion

Image credit

© NASA/Hubble Space Telescope

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