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19631 Greensleeves

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Also known as Greensleeves

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
Named after
Greensleeves
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
4.448
Orbital period
1685.187352043589
Show 17 more facts
discoverer or inventor
John Broughton
site of astronomical discovery
Reedy Creek Observatory
provisional designation
1999 RY38
time of discovery or invention
1999-09-13
orbital eccentricity
0.1683437516177779
absolute magnitude
14.05
orbital inclination
9.74423446090529
periapsis
2.304855470640883
apoapsis
3.237952570841158
semi-major axis of an orbit
2.771404020741021
mean anomaly
204.2006861755728
longitude of ascending node
121.3621697166656
argument of periapsis
278.664410311516
albedo
0.155
rotation period
2.68465
time of periapsis
2461729.8084253166
Sources (2)

via Wikidata · CC0