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EntityQ904736· pop 19

Also known as Ćuk, Cuk, 5639 Cuk, (5639) Ćuk, (5639) Cuk, 5639, (5639), 1989 PE

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
Followed by
5640 Yoshino
Parent body
Sun
Diameter
3.427
Orbital period
920.4617631735356
Show 19 more facts
discoverer or inventor
Jeff T. Alu
site of astronomical discovery
Palomar Observatory
provisional designation
1989 PE
time of discovery or invention
1989-08-09
asteroid family
Hungaria family
orbital eccentricity
0.02292294061132606
orbital inclination
26.60315555307166
periapsis
1.809396309797853
apoapsis
1.894295824638165
semi-major axis of an orbit
1.851846067218009
mean anomaly
238.8239298059118
longitude of ascending node
149.526209635837
argument of periapsis
87.8129366958591
absolute magnitude
14.97
Commons category
5639 Ćuk
albedo
0.198
rotation period
23.3
time of periapsis
2461310.3276089593
Sources (2)

via Wikidata · CC0