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12620 Simaqian

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Also known as Simaqian

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
Named after
Sima Qian
Followed by
12621 Alsufi
Parent body
Sun
Minor-planet group
asteroid belt
Orbital period
1990.898320055003
Show 15 more facts
discoverer or inventor
Tom Gehrels
site of astronomical discovery
Palomar Observatory
provisional designation
6335 P-L
time of discovery or invention
1960-09-24
orbital eccentricity
0.1441438989561377
orbital inclination
0.9190454703646666
periapsis
2.650744403126253
apoapsis
3.543624953809378
semi-major axis of an orbit
3.097184678467816
mean anomaly
82.54873267990702
longitude of ascending node
179.972656848059
argument of periapsis
58.56536063340012
absolute magnitude
13.91
time of periapsis
2460543.9829632915
Sources (2)

via Wikidata · CC0