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17855 Geffert

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Also known as Geffert

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
Martin Geffert
Followed by
17856 Gomes
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
14.754
Orbital period
2000.079568604613
Show 17 more facts
discoverer or inventor
Starkenburg Observatory
site of astronomical discovery
Starkenburg Observatory
provisional designation
1998 KK
time of discovery or invention
1998-05-19
orbital eccentricity
0.1349053813849078
absolute magnitude
13.06
orbital inclination
5.198277475351457
periapsis
2.687588917056975
apoapsis
3.525809847021496
semi-major axis of an orbit
3.106699382039235
mean anomaly
115.7205786685002
longitude of ascending node
244.3040112883586
argument of periapsis
227.3852508632058
albedo
0.062
rotation period
7.46763
time of periapsis
2460357.582319272
Sources (2)

via Wikidata · CC0