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(16380) 1981 EJ20

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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
7.08
Orbital period
1590.71605126379
Show 16 more facts
discoverer or inventor
Schelte J. Bus
site of astronomical discovery
Siding Spring Observatory
provisional designation
1997 YQ21
time of discovery or invention
1981-03-02
orbital eccentricity
0.09338780936850974
albedo
0.051
orbital inclination
8.952760612973348
periapsis
2.41778518502782
apoapsis
2.915884955330076
semi-major axis of an orbit
2.666835070178948
mean anomaly
111.8646646136201
longitude of ascending node
358.9935915737009
argument of periapsis
103.448407567956
absolute magnitude
14.88
time of periapsis
2460306.208562305
Sources (3)

via Wikidata · CC0

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