Skip to content
EntityQ2472669· pop 13

21254 Jonan

Sign in to save

Also known as Jonan

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
Named after
Jōnan
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
5.979
Orbital period
1594.493990756877
Show 16 more facts
discoverer or inventor
Juro Kobayashi
provisional designation
1996 BG2
time of discovery or invention
1996-01-24
site of astronomical discovery
Kumamoto
orbital eccentricity
0.05903984240205085
absolute magnitude
13.41
orbital inclination
21.47567157894907
periapsis
2.513357158948253
apoapsis
2.82875459499522
semi-major axis of an orbit
2.671055876971737
mean anomaly
304.1111686449899
longitude of ascending node
329.151631319689
argument of periapsis
129.3161546332042
albedo
0.375
time of periapsis
2461248.040015961
Sources (3)

via Wikidata · CC0