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9921 Rubincam

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Also known as (9921) 1981 EO18, Rubincam

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
9922 Catcheller
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
4.25
Orbital period
1338.083763893351
Image
AnimatedOrbitOf99211981EO18.gif
Show 17 more facts
provisional designation
1981 EO18
discoverer or inventor
Schelte J. Bus
site of astronomical discovery
Siding Spring Observatory
time of discovery or invention
1981-03-02
orbital inclination
2.398311769675485
orbital eccentricity
0.05985019463197991
absolute magnitude
14.41
periapsis
2.234191061364823
apoapsis
2.518649493636414
semi-major axis of an orbit
2.376420277500619
mean anomaly
178.3735658818781
longitude of ascending node
331.1509188854805
argument of periapsis
89.32034549808341
albedo
0.204
rotation period
8.01
time of periapsis
2460337.5034099603
Sources (3)

via Wikidata · CC0