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EntityQ2519955· pop 23· linked from 11 articles

148780 Altjira

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Also known as Altjira

trans-Neptunian object

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

Parent body
Sun
Minor-planet group
trans-Neptunian object
Diameter
340
Radius
123
Orbital period
108577.6942779284
Image
148780-altjira-hubble.jpg
Show 18 more facts
discoverer or inventor
Deep Ecliptic Survey
time of discovery or invention
2001-10-20
site of astronomical discovery
Kitt Peak National Observatory
provisional designation
2001 UQ18
orbital inclination
5.198985014623375
orbital eccentricity
0.05684870993320834
absolute magnitude
5.77
mean anomaly
130.0647005398434
argument of periapsis
303.852385651204
longitude of ascending node
1.885428463760158
catalog code
2001 UQ18
albedo
0.09
Commons category
148780 Altjira
semi-major axis of an orbit
44.54115336961234
periapsis
42.0090462616127
apoapsis
47.07326047761197
time of periapsis
2421772.3741900963
Sources (3)

via Wikidata · CC0