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EntityQ144803· pop 16

18567 Segenthau

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Also known as Segenthau

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
Șagu
Followed by
18568 Thuillot
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
8.636
Orbital period
1690.724805208944
Show 16 more facts
discoverer or inventor
Starkenburg Observatory
site of astronomical discovery
Starkenburg Observatory
provisional designation
1997 SS4
time of discovery or invention
1997-09-27
orbital eccentricity
0.06731754362765364
absolute magnitude
14.68
orbital inclination
3.362488191204618
periapsis
2.590499261610856
apoapsis
2.964444425625552
semi-major axis of an orbit
2.777471843618204
mean anomaly
73.53374162398714
longitude of ascending node
241.7850574928165
argument of periapsis
76.75816066422882
albedo
0.038
time of periapsis
2460655.1518861568
Sources (2)

via Wikidata · CC0