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.
Mars's distance from the Sun doesn't affect its appearance. From Truro, at the moment of perihelion it will be visible in the dawn sky, rising at 23:22 (GMT) and reaching an altitude of 43° above the southern horizon before fading from view as dawn breaks around 05:28.
The exact position of Mars at the moment it passes perihelion will be:
|Object||Right Ascension||Declination||Constellation||Magnitude||Angular Size|
The coordinates above are given in J2000.0.
|The sky on 03 August 2020|
14 days old
All times shown in BST.
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.
|03 Aug 2020||– Mars at perihelion|
|23 Aug 2020||– Mars 2020: a great chance to see the red planet|
|06 Oct 2020||– Mars at perigee|
|14 Oct 2020||– Mars at opposition|
© NASA/Hubble Space Telescope