Skip to content
EntityQ154650· pop 27· linked from 9 articles

4790 Petrpravec

Sign in to save

Also known as Petrpravec

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

Instance of
asteroid
Named after
Petr Pravec
Followed by
4791 Iphidamas
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
16.217
Orbital period
1554.178779069564
Show 18 more facts
discoverer or inventor
Eleanor F. Helin
site of astronomical discovery
Palomar Observatory
provisional designation
1988 PP
time of discovery or invention
1988-08-09
orbital eccentricity
0.08524916956526285
mean anomaly
6.126949511122799
longitude of ascending node
131.2461995274222
argument of periapsis
87.42652797704923
absolute magnitude
13.14
orbital inclination
12.71445189335905
periapsis
2.401989904163212
apoapsis
2.849691371756837
semi-major axis of an orbit
2.625840637960025
albedo
0.038
rotation period
241.191
Commons category
4790 Petrpravec
time of periapsis
2460974.0489585814
Sources (3)

via Wikidata · CC0