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78432 Helensailer

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Also known as Helensailer

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
78433 Gertrudolf
Parent body
Sun
Diameter
5.156
Orbital period
2125.121663504501
Show 16 more facts
discoverer or inventor
Robert Matson
time of discovery or invention
2002-08-29
site of astronomical discovery
Palomar Observatory
provisional designation
2002 QR50
orbital eccentricity
0.1190600132356193
absolute magnitude
15.35
mean anomaly
257.4877598127698
argument of periapsis
66.4092412352914
longitude of ascending node
24.12698491356895
orbital inclination
3.748932015323975
albedo
0.066
semi-major axis of an orbit
3.234870611561662
periapsis
2.849726873733614
apoapsis
3.620014349389709
time of periapsis
2461605.6416177675
Sources (2)

via Wikidata · CC0