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EntityQ8326364· pop 8

(18503) 1996 PY4

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Also known as 1996 PY4

asteroid; binary

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
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
3.529
Orbital period
1324.166712956547
Show 17 more facts
discoverer or inventor
Near-Earth Asteroid Tracking
site of astronomical discovery
Haleakalā Observatory
provisional designation
1996 PY4
time of discovery or invention
1996-08-15
orbital eccentricity
0.2653293743567286
albedo
0.429
orbital inclination
23.86455073986009
periapsis
1.733759426781576
apoapsis
2.98606838793066
semi-major axis of an orbit
2.359913907356118
mean anomaly
104.5310218639637
longitude of ascending node
151.2502556989006
argument of periapsis
69.7282924963931
absolute magnitude
14.18
rotation period
3.439
time of periapsis
2460616.009723268
Sources (2)

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