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79991 Umbertoleotti

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Also known as (79991) 1999 FW3, 1999 FW3

main belt 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
(79992) 1999 FS4
Parent body
Sun
Minor-planet group
asteroid belt
Orbital period
1848.695556277355
Show 15 more facts
time of discovery or invention
1999-03-19
site of astronomical discovery
San Vittore Observatory
provisional designation
2001 SJ25
discoverer or inventor
San Vittore Observatory
absolute magnitude
14.44
orbital eccentricity
0.0698634693468668
semi-major axis of an orbit
2.947890269857592
periapsis
2.741940428351469
apoapsis
3.153840111363715
orbital inclination
1.686801640326426
longitude of ascending node
184.4701824577797
argument of periapsis
60.87447830489636
mean anomaly
32.54433732912052
time of periapsis
2460833.376189438
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