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From: Dan Richter (1:317/3)
To: All
Date: Thu, 10.06.21 13:00
ES Picture of the Day 10 2021
EPOD - a service of USRA

The Earth Science Picture of the Day (EPOD) highlights the diverse processes
and phenomena which shape our planet and our lives. EPOD will collect and
archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.

The Noose of Mars in 2020

June 10, 2021

#01 (6)

Photographer: Paolo Bardelli
Summary Author: Paolo Bardelli

I created the photo sequence above showing Mars movement across the
night sky, centered on October 8, 2020. Photos were taken every night,
clouds permitting, from July 2020 until February 2021. Approximately
every 26 months, Mars passes at its closest distance to Earth. Last
fall the opposition of the Red Planet was particularly
favorable as Mars was at its minimum distance from us -- about 38.5
million miles (62 million km). From our perspective on Earth, when
opposition occurs, Mars performs two reversals of motion, passing from
direct motion to retrograde motion and then back to direct motion.
As a result, its trace across the night sky forms a “noose.” Also,
visible (at top left) is a faint trace left by Uranus’ retrograde

Photo details: Canon 6D camera; 50 mm lens; Vixen Polarie star-tracker;
processing using Iris, PS CC, Startrails, and Sequator.

Albusciago, Italy Coordinates: 45.7395, 8.7939

Related EPODs

The Noose of Mars in 2020 Comet NEOWISE in July of 2020 The
Relativistic Jet of M87 Battle of the Moons Star Trails
Overhead the Statue of Mother M4 Globular Star Cluster - The Golden

Night Sky Links

* Space Weather Live
* Space Weather Live Forum
* About the Moon
* American Meteor Society
* Arbeitskreises Meteore e.V.
* Global City Lights
* Heavens Above Home Page
* The International Meteor Organization
* Lunar and Planetary Institute
* MoonConnection
* NASA Eclipse Web Page
* Understanding The Moon Phases

Earth Science Picture of the Day is a service of the Universities
Space Research Association.
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* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)


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