Q132886

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

K. Reinmuth

Discovery site

Heidelberg Obs.

Discovery date

13 August 1925

Pronunciation

/ m æ ɡ ˈ n oʊ l i ə /

Named after

Magnolia ( flowering plant )

Alternative designations

1925 PA · 1945 OA

Minor planet category

main-belt · ( inner ) , Flora

Observation arc

92.29 yr (33,709 days)

Aphelion

2.6902 AU

Perihelion

1.7844 AU

Semi major axis

2.2373 AU

Orbital period sidereal

3.35 yr (1,222 days)

Mean anomaly

192.34 °

Mean motion

0° 17 40.2 / day

Inclination

5.9191°

Longitude of ascending node

221.13°

Argument of perihelion

84.766°

Dimensions

5.23 ± 0.58 km , 6.844 ± 0.056 km , 7.110 ± 0.117 km , 7.16 km , 9.65 ± 0.60 km

via Wikipedia infobox

Wikidata facts

Diameter

6.844

Orbital period

1222.556095136425

via Wikidata · CC0