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40328 Dow

Image by sergeitokmakov on Pixabay · Pixabay License

EntityQ2710061· pop 12

Also known as (40328) 1999 MK

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
(40329) 1999 ML
Parent body
Sun
Minor-planet group
asteroid belt
Orbital period
1217.968334889065
Show 15 more facts
discoverer or inventor
Jeffrey S. Medkeff
time of discovery or invention
1999-06-20
provisional designation
1999 MK
site of astronomical discovery
Junk Bond Observatory
orbital eccentricity
0.1694793199950692
absolute magnitude
15.54
mean anomaly
315.0373239821291
argument of periapsis
67.44786914910924
longitude of ascending node
245.2403803922973
orbital inclination
6.624743803959778
semi-major axis of an orbit
2.231987272401746
periapsis
1.853711587237449
apoapsis
2.610262957566043
time of periapsis
2461152.6197656714
Sources (2)

via Wikidata · CC0

Gallery (2)