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EntityQ158483· pop 27

Also known as Stallman

main-belt 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
Named after
Richard Stallman
Followed by
9883 Veecas
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
4.234
Orbital period
1352.524238716145
Show 17 more facts
discoverer or inventor
Spacewatch
site of astronomical discovery
Kitt Peak National Observatory
provisional designation
1997 HE18
time of discovery or invention
1994-09-28
orbital eccentricity
0.1831567155591293
absolute magnitude
15.99
orbital inclination
0.9933295469621491
periapsis
1.955103843925951
apoapsis
2.831870306848197
semi-major axis of an orbit
2.393487075387074
mean anomaly
193.2480547073626
longitude of ascending node
148.6769465629054
argument of periapsis
157.5834740440819
Commons category
9882 Stallman
albedo
0.039
time of periapsis
2461626.9890218372
Sources (2)

via Wikidata · CC0