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23172 Williamartin

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Also known as Williamartin

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
23173 Hideaki
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
2.135
Orbital period
1268.999719351359
Show 15 more facts
time of discovery or invention
2000-04-29
provisional designation
2000 HU22
orbital eccentricity
0.03986276047493349
periapsis
2.202463469524768
apoapsis
2.385346228626759
semi-major axis of an orbit
2.293904849075764
mean anomaly
113.2756300945449
longitude of ascending node
247.0105142261382
argument of periapsis
349.8310067721771
absolute magnitude
15.72
orbital inclination
0.2719036411515792
albedo
0.268
time of periapsis
2460601.203492224
Sources (2)

via Wikidata · CC0