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(172533) 2003 UO9

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main-belt 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

Small body data

(172533) 2003 UO9

Orbit class
Main-belt
Semi-major axis
2.383 AU
Eccentricity
0.141
Inclination
0.501 °
Absolute magnitude
17.130 H

via Minor Planet Center

Wikidata facts

Instance of
asteroid
Parent body
Sun
Minor-planet group
asteroid belt
Orbital period
1343.392937108624
Show 15 more facts
time of discovery or invention
2003-10-20
discoverer or inventor
James Whitney Young
provisional designation
2005 EE188
site of astronomical discovery
Table Mountain Observatory
absolute magnitude
17.13
orbital eccentricity
0.1404672484785535
semi-major axis of an orbit
2.382702145405541
periapsis
2.048010531096478
apoapsis
2.717393759714604
orbital inclination
0.500595088724805
longitude of ascending node
257.8442447593739
argument of periapsis
204.8746231973363
mean anomaly
298.5030782605461
time of periapsis
2461229.984806441
Sources (2)

via Wikidata · CC0

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via Wikidata sitelinks · CC0