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(16490) 1990 ST2

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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
(16491) 1990 SA3
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
2.722
Orbital period
1248.791227187409
Show 17 more facts
discoverer or inventor
Henry E. Holt
site of astronomical discovery
Palomar Observatory
provisional designation
1997 WN7
time of discovery or invention
1990-09-18
orbital eccentricity
0.2353385986160796
albedo
0.264
orbital inclination
2.070894538718752
periapsis
1.735388745403192
apoapsis
2.80358430139217
semi-major axis of an orbit
2.269486523397681
mean anomaly
114.0960084234967
longitude of ascending node
39.88167576033823
argument of periapsis
309.853248028953
absolute magnitude
14.89
rotation period
14.77
time of periapsis
2460604.71640451
Sources (3)

via Wikidata · CC0