Skip to content
EntityQ1045914· pop 25

3952 Russellmark

Sign in to save

Also known as Russellmark, (3952) Russellmark

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
3953 Perth
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
4.658
Orbital period
1345.831130204721
Show 17 more facts
discoverer or inventor
Rozhen Observatory
site of astronomical discovery
Rozhen Observatory
provisional designation
1986 EM2
time of discovery or invention
1986-03-14
orbital eccentricity
0.1540969802067001
orbital inclination
1.948396956041031
periapsis
2.017972935142494
apoapsis
2.753195598185581
semi-major axis of an orbit
2.385584266664038
mean anomaly
331.5601490443486
longitude of ascending node
288.2957214353856
argument of periapsis
177.0863383736603
absolute magnitude
14.21
albedo
0.246
rotation period
5.09
time of periapsis
2461106.8201020956
Sources (2)

via Wikidata · CC0