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2209 Tianjin

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Also known as Tianjin

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
Tianjin
Followed by
2210 Lois
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
16.786
Orbital period
1754.738628047737
Show 17 more facts
discoverer or inventor
Purple Mountain Observatory
site of astronomical discovery
Purple Mountain Observatory
provisional designation
1978 US1
time of discovery or invention
1978-10-28
orbital eccentricity
0.06338005697073652
orbital inclination
2.619122713481331
periapsis
2.66669127865659
apoapsis
3.027595499034354
semi-major axis of an orbit
2.847143388845472
mean anomaly
271.9376171613762
longitude of ascending node
150.7560482164154
argument of periapsis
263.5313757378443
absolute magnitude
11.35
albedo
0.354
rotation period
9.47
time of periapsis
2461429.7401801245
Sources (2)

via Wikidata · CC0