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10489 Keinonen

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Also known as (10489) 1985 TJ1, Keinonen

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
Followed by
(10490) 1985 VL
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
11.216
Orbital period
1902.078074021448
Show 16 more facts
discoverer or inventor
Edward L. G. Bowell
site of astronomical discovery
Anderson Mesa Station
time of discovery or invention
1985-10-15
provisional designation
1990 QA5
orbital eccentricity
0.08938944471765177
orbital inclination
10.91625897653874
periapsis
2.735810141121041
apoapsis
3.272927897881292
semi-major axis of an orbit
3.004369019501167
mean anomaly
292.0486305623651
longitude of ascending node
25.9642271175878
argument of periapsis
292.6961879444482
absolute magnitude
12.41
albedo
0.154
time of periapsis
2461359.524471964
Sources (2)

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