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21576 McGivney

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Also known as McGivney

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
21577 Negron
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
8.893
Orbital period
2058.311414565455
Show 16 more facts
discoverer or inventor
William G. Dillon
provisional designation
1998 SH4
time of discovery or invention
1998-09-19
site of astronomical discovery
Needville
orbital eccentricity
0.139428189971274
orbital inclination
2.187904476470944
periapsis
2.725182257392548
apoapsis
3.608239836230484
semi-major axis of an orbit
3.166711046811516
mean anomaly
26.50147715353487
longitude of ascending node
137.220431647485
argument of periapsis
105.8810923642592
absolute magnitude
13.91
albedo
0.081
time of periapsis
2460848.976964089
Sources (3)

via Wikidata · CC0