Skip to content
EntityQ1090812· pop 15

21416 Sisichen

Sign in to save

Also known as Sisichen, (21416) Sisichen

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
Orbital period
1369.656288414278
Show 14 more facts
provisional designation
1998 FN70
time of discovery or invention
1998-03-20
orbital eccentricity
0.1508578726144613
orbital inclination
6.518721965585551
periapsis
2.049537332559754
apoapsis
2.777775472824583
semi-major axis of an orbit
2.413656402692169
mean anomaly
20.24049690274888
longitude of ascending node
30.7805713719698
argument of periapsis
292.1116354289602
absolute magnitude
14.86
time of periapsis
2460923.492989268
Sources (2)

via Wikidata · CC0