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Mars at perihelion

Dominic Ford, Editor
From the Outer Planets feed

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The sky at

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 Fairfield, at the moment of perihelion it will be visible in the morning sky, becoming accessible around 23:45, when it rises to an altitude of 7° above your eastern horizon. It will then reach its highest point in the sky at 05:20, 52° above your southern horizon. It will be lost to dawn twilight around 05:30, 52° above your southern horizon.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.

A chart of the path of Mars across the sky in 2020 can be found here, and a chart of its rising and setting times here.

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

Object Right Ascension Declination Constellation Magnitude Angular Size
Mars 01h15m50s +03°49' Pisces -1.1 14.9"

The coordinates above are given in J2000.0.

The sky on 03 August 2020
Sunrise
05:51
Sunset
20:07
Twilight ends
21:57
Twilight begins
04:00

14-day old moon
Waxing Gibbous

99%

14 days old

Planets
Rise Culm. Set
Mercury 04:37 11:59 19:22
Venus 02:31 09:47 17:02
Moon 20:38 00:39 05:19
Mars 23:01 05:20 11:36
Jupiter 18:47 23:26 04:09
Saturn 19:13 23:59 04:48
All times shown in EDT.

Source

The circumstances of this event were computed using the DE405 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

03 Aug 2020  –  Mars at perihelion
06 Oct 2020  –  Mars at perigee
13 Oct 2020  –  Mars at opposition
12 Jul 2021  –  Mars at aphelion

Image credit

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Fairfield

Latitude:
Longitude:
Timezone:

41.14°N
73.26°W
EST

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