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9917 Keynes

Image by clarbner on Pixabay · Pixabay License

EntityQ615423· pop 19

9917 Keynes

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Also known as Keynes

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
9918 Timtrenkle
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
4.088
Orbital period
1333.399766777292
Image
AnimatedOrbitOf99171979MK.gif
Show 16 more facts
discoverer or inventor
Carlos Torres
provisional designation
1997 QW
site of astronomical discovery
Cerro El Roble Observatory
orbital inclination
6.372704124337496
orbital eccentricity
0.1337577259867257
absolute magnitude
14.04
periapsis
2.053748879433019
apoapsis
2.687993566171864
semi-major axis of an orbit
2.370871222802442
mean anomaly
215.989687393431
longitude of ascending node
163.5269969248784
argument of periapsis
171.1454080950341
time of discovery or invention
1979-06-26
albedo
0.421
time of periapsis
2461533.898103453
Sources (2)

via Wikidata · CC0

Gallery (2)