Q153377

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

Auguste Charlois

Discovery date

23 November 1897

Pronunciation

/ ˈ l oʊ t ɪ s /

Alternative designations

1897 DL

Minor planet category

Main belt

Adjectives

Lotidian / l oʊ ˈ t ɪ d i ə n /

Observation arc

114.49 yr (41818 d)

Aphelion

2.9274 AU (437.93 Gm )

Perihelion

2.2872 AU (342.16 Gm)

Semi major axis

2.6073 AU (390.05 Gm)

Orbital period sidereal

4.21 yr (1537.7 d )

Average orbital speed

18.44 km/s

Mean anomaly

89.1827 °

Mean motion

0° 14 2.796 / day

Inclination

9.5335°

Longitude of ascending node

219.980°

Dimensions

62 ± 1 km

Synodic rotation period

13.577 h (0.5657 d )

via Wikipedia infobox

Wikidata facts

Diameter

69.62

Orbital period

1536.746699743641

via Wikidata · CC0