783 Nora

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

J. Palisa

Discovery site

Vienna Obs.

Discovery date

18 March 1914

Named after

Character of Nora Helmer in the play A Doll's House , (By poet Henrik Ibsen )

Alternative designations

A914 FB · A911 QG, 1914 UL

Minor planet category

main-belt · ( inner ) background

Observation arc

108.44 yr (39,607 d)

Aphelion

2.8811 AU

Perihelion

1.8046 AU

Semi major axis

2.3429 AU

Orbital period sidereal

3.59 yr (1,310 d)

Mean anomaly

136.94 °

Mean motion

0° 16 29.28 / day

Inclination

9.3410°

Longitude of ascending node

142.09°

Argument of perihelion

154.70°

Mean diameter

38.719 ± 0.105 km 39.58 ± 0.62 km 40.02 ± 0.8 km

Synodic rotation period

55.53 ± 0.08 h

via Wikipedia infobox