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(18320) 1981 UJ28

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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
Followed by
18321 Bobrov
Parent body
Sun
Minor-planet group
asteroid belt
Orbital period
1358.526135791583
Show 16 more facts
discoverer or inventor
Schelte J. Bus
site of astronomical discovery
Palomar Observatory
provisional designation
1999 RD53
time of discovery or invention
1981-10-24
orbital eccentricity
0.1572800189325698
albedo
0.067
orbital inclination
1.661414586005338
periapsis
2.023002123481053
apoapsis
2.778123206236702
semi-major axis of an orbit
2.400562664858878
mean anomaly
176.1282820356078
longitude of ascending node
293.6825816015208
argument of periapsis
192.1956220959923
absolute magnitude
14.82
time of periapsis
2460135.8475711183
Sources (3)

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