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15971 Hestroffer

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Also known as Hestroffer

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
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
3.173
Orbital period
1230.920970520436
Show 16 more facts
discoverer or inventor
OCA-DLR Asteroid Survey
site of astronomical discovery
Caussols
provisional designation
1999 XO39
time of discovery or invention
1998-03-25
orbital eccentricity
0.1905216684993761
orbital inclination
5.505294321160999
periapsis
1.819532107897026
apoapsis
2.676035066888118
semi-major axis of an orbit
2.247783587392572
mean anomaly
317.6033563368881
longitude of ascending node
145.208261344527
argument of periapsis
207.2120431381226
absolute magnitude
15.41
albedo
0.133
time of periapsis
2461145.463660457
Sources (2)

via Wikidata · CC0