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8191 Mersenne

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Also known as Mersenne, (8191) Mersenne

asteroid

Picture of the Day · NASA

Pathfinder on Mars

Pathfinder on Mars

2026-07-04

On July 4th, 1997, using its own array of fireworks, a parachute, and a cocoon of airbags, the Mars Pathfinder spacecraft bounced like a giant beach ball at least 15 times before it came to rest on the surface of Mars at 10:07 AM Pacific Daylight Time. After its then novel airbag-assisted landing sequence was completed, Pathfinder transmitted this color mosaic to mission operators on Earth. In the scene from another world, the Mars Sojourner robot rover is visible in the foreground, crouched on top of the unfolded Pathfinder. About the size of a large house cat, the six-wheeled, solar-powered Sojourner became the first successful Martian rover. Surrounding Pathfinder are deflated airbags and the rock-strewn terrain of the Ares Vallis floodplain. In the distance Martian hills appear against a dusty brownish sky. The Pathfinder lander was subsequently renamed the Carl Sagan Memorial Station.

via NASA APOD

Wikidata facts

Instance of
asteroid
Followed by
8192 Tonucci
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
2.89
Orbital period
1243.965748320116
Show 16 more facts
discoverer or inventor
Eric Walter Elst
provisional designation
1993 OX9
time of discovery or invention
1993-07-20
site of astronomical discovery
La Silla Observatory
orbital eccentricity
0.1098624305954392
absolute magnitude
14.88
orbital inclination
2.827027411447914
periapsis
2.014947779291521
apoapsis
2.512324967188282
semi-major axis of an orbit
2.263636373239902
mean anomaly
73.22457818103547
longitude of ascending node
302.4963510079596
argument of periapsis
110.2624483361767
albedo
0.306
time of periapsis
2460747.47536891
Sources (3)

via Wikidata · CC0