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23257 Denny

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EntityQ2612461· pop 13

23257 Denny

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Also known as Denny

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
23258 Tsuihark
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
6.015
Orbital period
1475.500095149093
Show 16 more facts
discoverer or inventor
William Kwong Yu Yeung
time of discovery or invention
2000-12-29
site of astronomical discovery
Desert Beaver Observatory
provisional designation
2000 YW21
orbital eccentricity
0.1121391712739047
orbital inclination
5.732242785633776
periapsis
2.252019288296864
apoapsis
2.820891274787818
semi-major axis of an orbit
2.536455281542341
mean anomaly
94.52054242559717
longitude of ascending node
306.7923866579321
argument of periapsis
114.0806076199462
absolute magnitude
15.11
albedo
0.059
time of periapsis
2460613.097029604
Sources (2)

via Wikidata · CC0

Gallery (2)