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سیارک ۲۹۴۷

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Also known as Kippenhahn

سیارک

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

(2947) Kippenhahn

Orbit class
Main-belt
Semi-major axis
2.308 AU
Eccentricity
0.124
Inclination
3.133 °
Absolute magnitude
12.840 H

via Minor Planet Center

Wikidata facts

Instance of
asteroid
Followed by
2948 Amosov
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
7.588
Orbital period
1280.627892048301
Show 17 more facts
site of astronomical discovery
Heidelberg-Königstuhl State Observatory
discoverer or inventor
Ingrid van Houten-Groeneveld
provisional designation
1973 YD1
time of discovery or invention
1955-08-22
orbital eccentricity
0.1238151409248429
apoapsis
2.593649177063922
semi-major axis of an orbit
2.307896630516546
mean anomaly
280.6177679581978
longitude of ascending node
283.8402476621923
argument of periapsis
166.796560116116
absolute magnitude
12.85
orbital inclination
3.132894965370357
periapsis
2.02214408396917
albedo
0.206
rotation period
10.952
time of periapsis
2461282.886390238
Sources (2)

via Wikidata · CC0