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(20575) 1999 RL142

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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
5.154
Orbital period
1410.773842448499
Show 15 more facts
provisional designation
1999 RL142
time of discovery or invention
1999-09-09
orbital eccentricity
0.07365903969407778
albedo
0.201
orbital inclination
6.437870216474127
periapsis
2.280395536954018
apoapsis
2.643051950893052
semi-major axis of an orbit
2.461723743923535
mean anomaly
116.3579588594565
longitude of ascending node
28.27128453185973
argument of periapsis
136.4856327677801
absolute magnitude
13.81
time of periapsis
2460544.5145424455
Sources (3)

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