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27938 Guislain

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Also known as Guislain

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
Joseph Guislain
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
9.334
Orbital period
1954.954436615694
Show 17 more facts
discoverer or inventor
Eric Walter Elst
site of astronomical discovery
La Silla Observatory
time of discovery or invention
1997-05-03
provisional designation
1997 JG16
orbital eccentricity
0.1761870232873239
orbital inclination
17.79741022129756
periapsis
2.520697732495433
apoapsis
3.598889610141402
semi-major axis of an orbit
3.059793671318418
mean anomaly
239.9831475886015
longitude of ascending node
63.7658241124841
argument of periapsis
31.74983743053511
absolute magnitude
13.94
albedo
0.081
rotation period
27.3868
time of periapsis
2461652.2429946954
Sources (2)

via Wikidata · CC0