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8664 Grigorijrichters

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Also known as (8664) 1991 GR1, Grigorijrichters

main-belt minor planet

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
8665 Daun-Eifel
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
4.23
Orbital period
1328.638158416481
Show 17 more facts
discoverer or inventor
Eleanor F. Helin
site of astronomical discovery
Palomar Observatory
provisional designation
1996 XW33
time of discovery or invention
1991-04-10
orbital eccentricity
0.09782082599060095
absolute magnitude
14.08
orbital inclination
7.068502629053007
periapsis
2.133855437025992
apoapsis
2.596591681461275
semi-major axis of an orbit
2.365223559243633
mean anomaly
166.0578820993222
longitude of ascending node
142.525455201159
argument of periapsis
98.71970235105651
albedo
0.298
rotation period
43.673
time of periapsis
2460387.6365592694
Sources (2)

via Wikidata · CC0