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(16475) 1990 QS4

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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
(16476) 1990 QU4
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
4.383
Orbital period
1205.347554892373
Show 16 more facts
discoverer or inventor
Henry E. Holt
site of astronomical discovery
Palomar Observatory
provisional designation
1999 GB18
time of discovery or invention
1990-08-24
orbital eccentricity
0.1177769622858796
albedo
0.192
orbital inclination
5.524159838322364
periapsis
1.955484167288143
apoapsis
2.477599267837038
semi-major axis of an orbit
2.216541717562591
mean anomaly
257.2584614641736
longitude of ascending node
107.6169114839423
argument of periapsis
212.0202084037737
absolute magnitude
14.3
time of periapsis
2461344.4979507225
Sources (4)

via Wikidata · CC0