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3821 Sonet

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Also known as Sonet

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
3822 Segovia
Parent body
Sun
Diameter
15.115
Orbital period
2118.047199635384
Show 17 more facts
discoverer or inventor
Henri Debehogne
site of astronomical discovery
La Silla Observatory
provisional designation
1986 WH
time of discovery or invention
1985-09-06
orbital eccentricity
0.1944665807835058
orbital inclination
0.550857081481298
periapsis
2.600010094381851
apoapsis
3.855364772400865
semi-major axis of an orbit
3.227687433391358
mean anomaly
214.9468774109619
longitude of ascending node
114.0197717959197
argument of periapsis
342.1454735012858
absolute magnitude
12.9
albedo
0.077
rotation period
9.559
time of periapsis
2461853.9148891615
Sources (2)

via Wikidata · CC0