Skip to content
EntityQ710560· pop 16

Also known as (7247) 1991 TD1, Robertstirling

inner 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
Robert Stirling
Followed by
7248 Älvsjö
Parent body
Sun
Diameter
2.608
Orbital period
969.6594025890479
Show 17 more facts
discoverer or inventor
Robert H. McNaught
site of astronomical discovery
Siding Spring Observatory
provisional designation
1990 FS4
time of discovery or invention
1991-10-12
orbital eccentricity
0.1182362108546534
absolute magnitude
14.62
orbital inclination
22.91756302556633
periapsis
1.690568544726186
longitude of ascending node
190.7889053886108
argument of periapsis
194.0926733430364
apoapsis
2.143947151058457
semi-major axis of an orbit
1.917257847892321
mean anomaly
311.8175105550392
albedo
0.431
rotation period
3.175
time of periapsis
2461130.2794553624
Sources (2)

via Wikidata · CC0