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18281 Tros

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Also known as Tros

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
18282 Ilos
Parent body
Sun
Diameter
13.976
Orbital period
4355.67754457693
Show 16 more facts
discoverer or inventor
Tom Gehrels
site of astronomical discovery
Palomar Observatory
provisional designation
4317 T-3
time of discovery or invention
1977-10-16
orbital eccentricity
0.1048722244926543
absolute magnitude
12.63
periapsis
4.672219411461921
apoapsis
5.767003991730485
semi-major axis of an orbit
5.219611701596203
mean anomaly
68.84275739905102
longitude of ascending node
171.12748486
argument of periapsis
170.7856757289032
orbital inclination
9.535526274936462
albedo
0.099
time of periapsis
2460167.5642985837
Sources (3)

via Wikidata · CC0