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228136 Billary

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Also known as Billary

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
Orbital period
1237.056754038908
Show 14 more facts
time of discovery or invention
2009-09-13
provisional designation
2009 RF4
site of astronomical discovery
Teide Observatory
orbital eccentricity
0.1052353719772537
absolute magnitude
17.28
mean anomaly
302.4919175359836
argument of periapsis
134.8704302124533
orbital inclination
3.275368119116205
longitude of ascending node
209.9987130253407
semi-major axis of an orbit
2.255247094265811
periapsis
2.017915327400128
apoapsis
2.492578861131495
time of periapsis
2461198.1132272887
Sources (3)

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