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5515 Naderi

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Also known as (5515) 1989 EL1, Naderi

main-belt 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

Wikidata facts

Instance of
asteroid
Named after
Firouz Naderi
Followed by
Q1081686
Parent body
Sun
Minor-planet group
asteroid belt
Diameter
7.001
Orbital period
1589.471067905406
Show 17 more facts
discoverer or inventor
Eleanor F. Helin
site of astronomical discovery
Palomar Observatory
provisional designation
1976 HF
time of discovery or invention
1989-03-05
orbital eccentricity
0.2246525325990021
orbital inclination
13.10047571509616
periapsis
2.066644799313603
apoapsis
3.264242025508554
semi-major axis of an orbit
2.665443412411079
mean anomaly
131.8563994026394
longitude of ascending node
170.8993314121696
argument of periapsis
46.24251512786204
absolute magnitude
13.1
albedo
0.273
rotation period
5.23
time of periapsis
2460418.327966754
Sources (2)

via Wikidata · CC0