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(19958) 1985 RN4

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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
(19959) 1985 UJ3
Parent body
Sun
Minor-planet group
Mars-crossing asteroid
Orbital period
1341.722971676738
Show 16 more facts
discoverer or inventor
Henri Debehogne
site of astronomical discovery
La Silla Observatory
provisional designation
1996 TO38
time of discovery or invention
1985-09-11
absolute magnitude
16.15
orbital eccentricity
0.3102340847168966
orbital inclination
2.394467188162159
periapsis
1.64214442018289
apoapsis
3.119309817546145
semi-major axis of an orbit
2.380727118864518
mean anomaly
347.9341920069546
longitude of ascending node
53.20930848680398
argument of periapsis
288.7600342718011
albedo
0.754
time of periapsis
2461045.4693659893
Sources (3)

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