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21359 Geng

Image by lyhxq on Pixabay · Pixabay License

EntityQ2614112· pop 13

21359 Geng

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Also known as Geng

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
21360 Bobduff
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
3.929
Orbital period
1842.341342050425
Show 15 more facts
provisional designation
1999 TB28
time of discovery or invention
1997-04-06
orbital eccentricity
0.02534218945192986
apoapsis
3.015666244408298
semi-major axis of an orbit
2.941131531923254
mean anomaly
290.877889056866
longitude of ascending node
295.3422543000536
argument of periapsis
234.250770939171
absolute magnitude
14.55
orbital inclination
0.7472689811788331
periapsis
2.866596819438211
albedo
0.218
time of periapsis
2461354.240340668
Sources (2)

via Wikidata · CC0

Gallery (2)