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 Jacksonville, at the moment of perihelion it will be visible in the morning sky, becoming accessible around 22:22, when it reaches an altitude of 7° above your eastern horizon. It will then reach its highest point in the sky at 03:29, 53° above your southern horizon. It will be lost to dawn twilight around 06:38, 31° above your south-western horizon.

A chart of the path of Mars across the sky in 2035 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 00h01m00s 6°23'S Cetus -2.4 22.8"

The coordinates above are given in J2000.0.

The sky on 21 Aug 2035

The sky on 21 August 2035
Sunrise
06:53
Sunset
20:01
Twilight ends
21:26
Twilight begins
05:28


Waning Gibbous

91%

18 days old

Planets
Rise Culm. Set
Mercury 08:55 15:02 21:08
Venus 07:09 13:42 20:14
Moon 21:13 03:09 09:09
Mars 21:42 03:29 09:17
Jupiter 23:55 06:38 13:21
Saturn 05:35 12:21 19:08
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

15 Aug 2035  –  Mars enters retrograde motion
11 Sep 2035  –  Mars at perigee
15 Sep 2035  –  Mars at opposition
15 Oct 2035  –  Mars ends retrograde motion

Image credit

© NASA/Hubble Space Telescope

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