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8623 Johnnygalecki

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Also known as (8623) 1981 EQ9

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
Named after
Johnny Galecki
Followed by
8624 Kaleycuoco
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
8.172
Orbital period
2049.403254041653
Show 16 more facts
discoverer or inventor
Schelte J. Bus
site of astronomical discovery
Siding Spring Observatory
provisional designation
1981 EQ9
time of discovery or invention
1981-03-01
orbital eccentricity
0.09608895888152959
absolute magnitude
14.1
orbital inclination
4.826917121389106
periapsis
2.854160255894358
apoapsis
3.460975030787641
semi-major axis of an orbit
3.157567643340999
mean anomaly
346.3343438188986
longitude of ascending node
208.3774801138869
argument of periapsis
344.5310013293142
albedo
0.096
time of periapsis
2461078.2956673503
Sources (2)

via Wikidata · CC0