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(18594) 1998 BJ

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minor planet

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

(18594) 1998 BJ

Orbit class
Main-belt
Semi-major axis
2.234 AU
Eccentricity
0.189
Inclination
6.360 °
Absolute magnitude
15.030 H

via Minor Planet Center

Wikidata facts

Instance of
asteroid
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
2.547
Orbital period
1219.095801096834
Show 16 more facts
discoverer or inventor
Takeshi Urata
site of astronomical discovery
Nachi-Katsuura Observatory
provisional designation
2000 RB44
time of discovery or invention
1998-01-16
orbital eccentricity
0.1891929013595136
albedo
0.299
absolute magnitude
15.03
orbital inclination
6.360435450967571
periapsis
1.8109241
apoapsis
2.655901191796863
semi-major axis of an orbit
2.233364485072669
mean anomaly
173.6730169373175
longitude of ascending node
283.9988685191561
argument of periapsis
120.2012834864336
time of periapsis
2460412.3776507997
Sources (4)

via Wikidata · CC0

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via Wikidata sitelinks · CC0