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(9181) 1991 NP2

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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

Small body data

(9181) 1991 NP2

Orbit class
Main-belt
Semi-major axis
2.317 AU
Eccentricity
0.151
Inclination
6.855 °
Absolute magnitude
13.880 H

via Minor Planet Center

Wikidata facts

Instance of
asteroid
Followed by
(9182) 1991 NB4
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
3.871
Orbital period
1287.931153774641
Show 17 more facts
discoverer or inventor
Henry E. Holt
site of astronomical discovery
Palomar Observatory
provisional designation
1991 PD3
time of discovery or invention
1991-07-14
orbital eccentricity
0.1504701925453347
albedo
0.356
orbital inclination
6.854831356831477
periapsis
1.968074054388015
apoapsis
2.665251432529735
semi-major axis of an orbit
2.316662743458875
mean anomaly
262.6560759426917
longitude of ascending node
317.2912813486893
argument of periapsis
350.9422572220849
absolute magnitude
13.89
rotation period
5.6004
time of periapsis
2461348.7563122893
Sources (3)

via Wikidata · CC0