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21936 Ryan

Image by black07jack on Pixabay · Pixabay License

EntityQ2613790· pop 12

21936 Ryan

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Also known as Ryan

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
21937 Basheehan
Parent body
Sun
Minor-planet group
asteroid belt
Orbital period
1236.206003115231
Show 14 more facts
provisional designation
1999 VH79
time of discovery or invention
1999-11-04
orbital eccentricity
0.1006726567228008
absolute magnitude
15.63
orbital inclination
2.061148877947833
periapsis
2.027275377038426
apoapsis
2.481150597537018
semi-major axis of an orbit
2.254212987287723
mean anomaly
21.73478942898987
longitude of ascending node
330.6104918269911
argument of periapsis
290.8152732180985
time of periapsis
2460925.864785643
Sources (2)

via Wikidata · CC0

Gallery (2)