567 Eleutheria

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

Paul Götz

Discovery site

Heidelberg

Discovery date

28 May 1905

Pronunciation

/ ɛ lj uː ˈ θ ɪər i ə /

Alternative designations

1905 QP

Observation arc

110.89 yr (40504 d)

Aphelion

3.4182 AU (511.36 Gm )

Perihelion

2.8471 AU (425.92 Gm)

Semi major axis

3.1327 AU (468.65 Gm)

Orbital period sidereal

5.54 yr (2025.2 d )

Mean anomaly

61.183 °

Mean motion

0° 10 39.936 / day

Inclination

9.2562°

Longitude of ascending node

58.278°

Argument of perihelion

133.321°

Mean radius

46.705 ± 1.1 km

Synodic rotation period

7.717 h (0.3215 d )

Geometric albedo

0.0439 ± 0.002

via Wikipedia infobox

Wikidata facts

Instance of

asteroid

Named after

Eleutheria

Followed by

568 Cheruskia

Follows

566 Stereoskopia

Parent body

Sun

Minor-planet group

asteroid belt

Diameter

93.41

Orbital period

2033.807607721371

via Wikidata · CC0