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8544 Sigenori

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Also known as Sigenori

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

Small body data

(8544) Sigenori

Orbit class
Main-belt
Semi-major axis
2.308 AU
Eccentricity
0.086
Inclination
0.958 °
Absolute magnitude
14.630 H

via Minor Planet Center

Wikidata facts

Instance of
asteroid
Followed by
8545 McGee
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
2.742
Orbital period
1280.794891321816
Show 16 more facts
discoverer or inventor
Takao Kobayashi
site of astronomical discovery
Ōizumi Observatory
provisional designation
1991 ES4
time of discovery or invention
1993-12-17
orbital eccentricity
0.08570614912657282
absolute magnitude
14.64
orbital inclination
0.9577755770392868
periapsis
2.110279137326469
apoapsis
2.505915394246753
semi-major axis of an orbit
2.308097265786611
mean anomaly
25.44763991179833
longitude of ascending node
149.9375414987137
argument of periapsis
317.3122567453048
albedo
0.408
time of periapsis
2460909.9633133467
Sources (2)

via Wikidata · CC0