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(39535) 1990 RX7

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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
39536 Lenhof
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
6.46
Orbital period
1659.520434677406
Show 17 more facts
time of discovery or invention
1990-09-14
discoverer or inventor
Henri Debehogne
site of astronomical discovery
La Silla Observatory
provisional designation
1999 RK77
albedo
0.074
orbital eccentricity
0.04420546043552324
orbital inclination
6.056774103867645
periapsis
2.621927408454668
apoapsis
2.864455490634485
semi-major axis of an orbit
2.743191449544577
mean anomaly
161.5090004203967
longitude of ascending node
161.2381961522397
argument of periapsis
297.8331687803064
absolute magnitude
14.7
rotation period
132.998
time of periapsis
2460255.979203939
Sources (4)

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