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21791 Mattweegman

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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
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
3.35
Orbital period
1338.094196473927
Show 15 more facts
provisional designation
1999 SR7
time of discovery or invention
1999-09-29
orbital eccentricity
0.1496907105074799
absolute magnitude
14.48
apoapsis
2.732162518368404
semi-major axis of an orbit
2.376432629574273
mean anomaly
55.34732187064129
longitude of ascending node
48.69055083670226
argument of periapsis
289.3029408033175
orbital inclination
7.601267348584512
periapsis
2.020702740780141
albedo
0.286
time of periapsis
2460794.777971707
Sources (2)

via Wikidata · CC0