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18838 Shannon

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EntityQ670337· pop 15

18838 Shannon

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Also known as Shannon

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
Claude Shannon
Followed by
18839 Whiteley
Parent body
Sun
Minor-planet group
asteroid belt
Orbital period
1772.497220006561
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discoverer or inventor
Peter Kušnirák
site of astronomical discovery
Ondřejov Observatory
provisional designation
1999 OQ
time of discovery or invention
1999-07-18
orbital eccentricity
0.08327151310750192
absolute magnitude
14.46
orbital inclination
1.291199555746547
periapsis
2.627637699987905
apoapsis
3.105003398348641
semi-major axis of an orbit
2.866320549168273
mean anomaly
94.68351567584543
longitude of ascending node
216.3376270729376
argument of periapsis
170.285635063571
time of periapsis
2460534.315921345
Sources (2)

via Wikidata · CC0

Gallery (2)