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16974 Iphthime

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Also known as (16974) 1998 WR21, Iphthime

Jupiter trojan

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
Iphthime
Followed by
16975 Delamere
Parent body
Sun
Diameter
57.341
Orbital period
4302.948410153309
Image
16974 Iphthime Hubble.jpg
Show 17 more facts
provisional designation
1998 WR21
time of discovery or invention
1998-11-18
orbital eccentricity
0.06910254896106946
absolute magnitude
9.93
orbital inclination
15.03733170841493
periapsis
4.81962944881326
apoapsis
5.535172669152151
semi-major axis of an orbit
5.177401058982706
mean anomaly
116.9887480658106
longitude of ascending node
241.5281236435699
argument of periapsis
137.215218164329
Commons category
16974 Iphthime
albedo
0.065
rotation period
78.9
time of periapsis
2459402.1762569565
Sources (5)

via Wikidata · CC0