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25142 Hopf

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Also known as Hopf

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
Eberhard Hopf
Followed by
25143 Itokawa
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
4.89
Orbital period
1667.91323773008
Show 16 more facts
discoverer or inventor
Paul G. Comba
time of discovery or invention
1998-09-26
site of astronomical discovery
Prescott Observatory
provisional designation
1998 SA28
orbital eccentricity
0.0641457108480232
periapsis
2.575875811459896
apoapsis
2.928989296962106
semi-major axis of an orbit
2.752432554211001
mean anomaly
48.79926971521687
longitude of ascending node
27.09044861895586
argument of periapsis
277.7083844360208
orbital inclination
4.336334411303403
absolute magnitude
13.79
albedo
0.294
time of periapsis
2460774.408477918
Sources (2)

via Wikidata · CC0