Q152678

Picture of the Day · NASA

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

Key facts

Discovered by

Auguste Charlois

Discovery site

Nice Observatory

Discovery date

7 January 1896

Pronunciation

/ ˈ z æ n θ iː /

Named after

Xanthe , (Greek mythology)

Alternative designations

1896 CJ

Minor planet category

main-belt

Observation arc

121.31 yr (44,307 days)

Aphelion

3.2765 AU

Perihelion

2.5902 AU

Semi major axis

2.9334 AU

Orbital period sidereal

5.02 yr (1,835 days)

Mean anomaly

248.70 °

Mean motion

0° 11 46.32 / day

Inclination

15.344°

Longitude of ascending node

107.45°

Argument of perihelion

181.53°

Dimensions

76.53 ± 2.3 km

via Wikipedia infobox