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EntityQ646006· pop 24

4642 Murchie

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Also known as Murchie

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

4642 Murchie (1990 QG4)

Orbit class
Main-belt Asteroid
Diameter
17.065 km
Albedo
0.088
Absolute magnitude
12.440 H
Earth MOID
1.700 AU

via NASA/JPL Small-Body Database

Wikidata facts

Instance of
asteroid
Followed by
4643 Cisneros
Follows
4641 Ayako
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
17.065
Orbital period
2070.640726675914
Show 16 more facts
discoverer or inventor
Henry E. Holt
site of astronomical discovery
Palomar Observatory
provisional designation
A916 PB
time of discovery or invention
1990-08-23
orbital eccentricity
0.1454376008537453
orbital inclination
1.013243045285638
periapsis
2.716948020763094
apoapsis
3.641740410830536
semi-major axis of an orbit
3.179344215796815
mean anomaly
128.2100828682422
longitude of ascending node
149.8206802913364
argument of periapsis
129.5895249235097
absolute magnitude
12.45
albedo
0.088
time of periapsis
2460263.0638356735
Sources (2)

via Wikidata · CC0