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21795 Masi

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Also known as Masi

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
Gianluca Masi
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
3.15
Orbital period
1342.866850366122
Show 16 more facts
discoverer or inventor
Franco Mallia
provisional designation
1999 SN9
time of discovery or invention
1999-09-29
orbital eccentricity
0.1913841261180966
absolute magnitude
15.08
orbital inclination
1.837214138325854
periapsis
1.92618773648097
apoapsis
2.837972351630991
semi-major axis of an orbit
2.38208004405598
mean anomaly
7.770575964764434
longitude of ascending node
337.00491353
argument of periapsis
81.92232373547077
albedo
0.235
rotation period
13.862
time of periapsis
2460971.5143086906
Sources (2)

via Wikidata · CC0