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EntityQ151786· pop 28· linked from 150 articles

Also known as (3540) Protesilaos, Protesilaos

asteroid

Picture of the Day · NASA

Pathfinder on Mars

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

Wikidata facts

Diameter
70.225
Orbital period
4434.231462205109
Show 15 more facts
provisional designation
1985 VO1
time of discovery or invention
1973-10-27
orbital inclination
23.28277256033087
orbital eccentricity
0.118082166395887
semi-major axis of an orbit
5.282181114533667
mean anomaly
22.34636056470518
longitude of ascending node
26.43314636339268
argument of periapsis
116.6029232247367
absolute magnitude
9.36
periapsis
4.658449725234092
apoapsis
5.905912503833244
Commons category
3540 Protesilaos
albedo
0.062
rotation period
8.945
time of periapsis
2460725.2529581063
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via Wikidata · CC0

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