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(16391) 1981 EM40

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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
Orbital period
1611.71669635108
Show 16 more facts
discoverer or inventor
Schelte J. Bus
site of astronomical discovery
Siding Spring Observatory
provisional designation
1981 EM40
time of discovery or invention
1981-03-02
orbital eccentricity
0.1059515478777045
albedo
0.055
orbital inclination
3.093029361591081
periapsis
2.405218714475708
apoapsis
2.975292171184215
semi-major axis of an orbit
2.690255442829962
mean anomaly
162.5383471020852
longitude of ascending node
128.4013397678569
argument of periapsis
241.2016541499513
absolute magnitude
15.09
time of periapsis
2460072.8173116064
Sources (3)

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