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EntityQ1045135· pop 25· linked from 9 articles

Also known as Steel, (4713) Steel

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
Named after
Duncan Steel
Followed by
Q154589
Parent body
Sun
Diameter
6.286
Orbital period
976.6388178027734
Show 18 more facts
discoverer or inventor
Robert H. McNaught
site of astronomical discovery
Siding Spring Observatory
provisional designation
1989 QL
time of discovery or invention
1989-08-26
orbital eccentricity
0.0734473080461748
orbital inclination
22.67193345946762
periapsis
1.784954536169903
apoapsis
2.067939210015136
semi-major axis of an orbit
1.92644687309252
mean anomaly
262.0792822772239
longitude of ascending node
101.3854638398628
argument of periapsis
152.6812861005048
absolute magnitude
13.23
albedo
0.381
rotation period
5.199
asteroid spectral type
A-type asteroid
time of periapsis
2461266.147705542
Sources (3)

via Wikidata · CC0