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4125 Lew Allen

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Also known as Lew Allen

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
Lew Allen
Followed by
4126 Mashu
Parent body
Sun
Diameter
6.392
Orbital period
973.1764637887138
Show 17 more facts
discoverer or inventor
Eleanor F. Helin
site of astronomical discovery
Palomar Observatory
provisional designation
1987 MO
time of discovery or invention
1987-06-28
orbital eccentricity
0.1178729580421071
argument of periapsis
33.99864470630909
absolute magnitude
13.61
orbital inclination
20.4426439136332
periapsis
1.69535212841579
apoapsis
2.148430111051517
semi-major axis of an orbit
1.921891119733653
mean anomaly
143.6491233749653
longitude of ascending node
276.0071281143646
albedo
0.172
rotation period
4.6283
time of periapsis
2460612.177928021
Sources (2)

via Wikidata · CC0