Q137239

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

E. Delporte

Discovery site

Uccle Obs.

Discovery date

4 February 1932

Pronunciation

kətlɛta

Named after

Adolphe Quetelet , (Belgian astronomer)

Alternative designations

1932 CB · 1978 TH 3

Minor planet category

main-belt · ( middle ) , background

Observation arc

85.80 yr (31,340 d )

Aphelion

3.2824 AU

Perihelion

2.0383 AU

Semi major axis

2.6603 AU

Orbital period sidereal

4.34 yr (1,585 days)

Mean anomaly

271.62 °

Mean motion

0° 13 37.56 / day

Inclination

1.6619°

Longitude of ascending node

73.160°

Argument of perihelion

35.475°

Dimensions

15.94 ± 1.8 km , 18.032 ± 0.076 km

via Wikipedia infobox

Wikidata facts

Diameter

18.681

Orbital period

1586.714401493275

via Wikidata · CC0