Q121495

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

29 September 1924

Pronunciation

/ ə ˈ m eɪ t ə /

Named after

Amata ( Roman mythology )

Alternative designations

1924 SW · 1935 SU, 1969 TJ 4 · A913 UC

Minor planet category

main-belt · ( outer )

Observation arc

102.63 yr (37,484 days)

Aphelion

3.7582 AU

Perihelion

2.5551 AU

Semi major axis

3.1566 AU

Orbital period sidereal

5.61 yr (2,049 days)

Mean anomaly

242.46 °

Mean motion

0° 10 32.52 / day

Inclination

18.030°

Longitude of ascending node

1.9593°

Argument of perihelion

323.98°

Dimensions

50.69 ± 2.9 km ( IRAS :5) , 50.74 km (derived) , 56.063 ± 0.404 , 59.28 ± 0.79 km , 59.838 ± 0.563 km , 60 ± 6 km , 62.22 ± 1.11 km

via Wikipedia infobox