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EntityQ1045833· pop 27

3933 Portugal

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Also known as Portugal, (3933) Portugal

asteroid in the main belt

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
Portugal
Followed by
3934 Tove
Parent body
Sun
Diameter
14.949
Orbital period
2151.795369644042
Show 18 more facts
discoverer or inventor
Richard Martin West
site of astronomical discovery
La Silla Observatory
provisional designation
1983 YW
time of discovery or invention
1986-03-12
orbital eccentricity
0.09592636572347575
orbital inclination
1.677660230815872
periapsis
2.948982295083142
apoapsis
3.57478343212565
semi-major axis of an orbit
3.261882863604396
mean anomaly
168.8919856550724
longitude of ascending node
42.35295797779958
argument of periapsis
255.2683066283653
absolute magnitude
12.59
albedo
0.087
rotation period
8.56077
Commons category
3933 Portugal
time of periapsis
2459990.9972424926
Sources (3)

via Wikidata · CC0