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15964 Billgray

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Also known as Billgray

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
Followed by
15965 Robertcox
Follows
Q961472
Parent body
Sun
Orbital period
996.3734208277959
Show 16 more facts
discoverer or inventor
James M. Roe
provisional designation
1998 DU
time of discovery or invention
1998-02-19
asteroid family
Hungaria family
orbital eccentricity
0.09215549528581767
orbital inclination
18.07822867664648
periapsis
1.772395370769541
apoapsis
2.132227858353922
semi-major axis of an orbit
1.952311614561731
mean anomaly
144.4031417980016
longitude of ascending node
309.5185870065
argument of periapsis
110.6519539273711
absolute magnitude
15.07
rotation period
3.571
time of periapsis
2460600.8348545237
Sources (2)

via Wikidata · CC0