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EntityQ158195· pop 22

Also known as Thooft

Asteroid named after Gerard 't Hooft

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
Named after
Gerard 't Hooft
Followed by
Q158199
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
2.236
Orbital period
1203.232601863803
Show 16 more facts
discoverer or inventor
Tom Gehrels
site of astronomical discovery
Palomar Observatory
provisional designation
1997 CR4
time of discovery or invention
1971-03-25
orbital eccentricity
0.1339615192837842
absolute magnitude
15.08
orbital inclination
5.047712827954554
periapsis
1.917364278734311
apoapsis
2.510531990144288
semi-major axis of an orbit
2.2139481344393
mean anomaly
156.2649473967156
longitude of ascending node
350.3339519747117
argument of periapsis
263.1391018941424
albedo
0.268
time of periapsis
2460478.2136687883
Sources (2)

via Wikidata · CC0