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7818 Muirhead

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Also known as Muirhead

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
(7819) 1990 RR3
Parent body
Sun
Minor-planet group
Mars-crossing asteroid
Diameter
3.907
Orbital period
1307.522464856448
Show 17 more facts
discoverer or inventor
Eleanor F. Helin
site of astronomical discovery
Palomar Observatory
provisional designation
1990 QO
time of discovery or invention
1990-08-19
periapsis
1.521435254288952
apoapsis
3.1587583339478
semi-major axis of an orbit
2.340096794118376
orbital inclination
21.74104984286481
longitude of ascending node
160.4328212115646
argument of periapsis
254.6365382643013
mean anomaly
257.9261616220469
apparent magnitude
19.89
absolute magnitude
13.97
orbital eccentricity
0.3498408877303948
albedo
0.297
time of periapsis
2461371.23287987
Sources (2)

via Wikidata · CC0