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121725 Aphidas

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Also known as Aphidas

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
centaur
Orbital period
27768.75539306731
Show 15 more facts
discoverer or inventor
Carl W. Hergenrother
site of astronomical discovery
Fred Lawrence Whipple Observatory
orbital eccentricity
0.4618533773141413
absolute magnitude
8.88
mean anomaly
246.9859770286753
argument of periapsis
216.0189135356714
longitude of ascending node
103.6811941480791
orbital inclination
6.769095152016464
time of discovery or invention
1999-12-13
provisional designation
1999 XX143
semi-major axis of an orbit
17.94617886916189
periapsis
9.657675548555792
apoapsis
26.23468218976798
time of periapsis
2469717.8854441033
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