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99503 Leewonchul

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Also known as Leewonchul

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
Diameter
4.117
Orbital period
1362.924435638055
Show 16 more facts
discoverer or inventor
Young-Beom Jeon
time of discovery or invention
2002-02-16
provisional designation
2002 DB1
orbital inclination
7.692809141619797
orbital eccentricity
0.1975147792569711
site of astronomical discovery
Bohyeonsan
absolute magnitude
15.75
mean anomaly
124.1864350965455
argument of periapsis
141.6625413912084
longitude of ascending node
62.18470765497964
albedo
0.06
semi-major axis of an orbit
2.405741171711953
periapsis
1.930571735231859
apoapsis
2.880910608192046
time of periapsis
2460530.3424250893
Sources (3)

via Wikidata · CC0