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21696 Ermalmquist

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Also known as Ermalmquist, (21696) Ermalmquist

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

Wikidata facts

Instance of
asteroid
Followed by
21697 Mascharak
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
6.41
Orbital period
1282.657659057222
Show 15 more facts
provisional designation
1999 RC52
time of discovery or invention
1999-09-07
orbital eccentricity
0.1840306700485155
orbital inclination
3.539923412977978
periapsis
1.885162200273697
apoapsis
2.735507060385362
semi-major axis of an orbit
2.310334630329529
mean anomaly
164.9509001580686
longitude of ascending node
20.12083831994418
argument of periapsis
313.5442911600704
absolute magnitude
15.03
albedo
0.052
time of periapsis
2460412.7901792885
Sources (2)

via Wikidata · CC0