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39184 Willgrundy

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Also known as Willgrundy

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
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
5.494
Orbital period
1682.723155125562
Show 16 more facts
time of discovery or invention
2000-11-24
site of astronomical discovery
Anderson Mesa Station
provisional designation
2000 WG166
orbital eccentricity
0.06167940301384452
orbital inclination
4.301842935242071
periapsis
2.597929803956368
apoapsis
2.939473536225664
semi-major axis of an orbit
2.768701670091016
mean anomaly
151.9461145122248
longitude of ascending node
178.5337831321443
argument of periapsis
242.1774956234744
absolute magnitude
15.42
albedo
0.049
time of periapsis
2460290.268763275
Sources (2)

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