Skip to content
EntityQ17487893· pop 8

100133 Demosthenes

Sign in to save

Also known as (100133) Demosthenes, Demosthenes

Asteroid in the outer main belt

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
Demosthenes
Parent body
Sun
Diameter
9.405
Orbital period
2859.095405173747
Show 17 more facts
discoverer or inventor
Eric Walter Elst
time of discovery or invention
1993-09-15
site of astronomical discovery
La Silla Observatory
orbital eccentricity
0.2065470358277445
absolute magnitude
14.38
mean anomaly
82.8235402025011
argument of periapsis
299.0487682443481
longitude of ascending node
357.7923452801384
orbital inclination
2.563791674176322
provisional designation
1993 RG14
albedo
0.046
semi-major axis of an orbit
3.942334589469627
periapsis
3.128057065773488
apoapsis
4.756612113165766
time of periapsis
2460342.72110213
Sources (3)

via Wikidata · CC0

Available in 8 languages

via Wikidata sitelinks · CC0