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EntityQ1191008· pop 19

9121 Stefanovalentini

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Also known as Stefanovalentini

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

Small body data

(9121) Stefanovalentini

Orbit class
Outer belt
Semi-major axis
3.875 AU
Eccentricity
0.041
Inclination
4.649 °
Absolute magnitude
11.360 H

via Minor Planet Center

Wikidata facts

Instance of
asteroid
Followed by
9122 Hunten
Parent body
Sun
Orbital period
2786.477238073176
Show 16 more facts
discoverer or inventor
Vincenzo Silvano Casulli
site of astronomical discovery
Kolleverde di Gvidoniya observatory
provisional designation
1998 DJ11
time of discovery or invention
1998-02-24
orbital eccentricity
0.04093454733804025
absolute magnitude
11.36
orbital inclination
4.648642619622176
periapsis
3.716661102119279
apoapsis
4.033927956851412
semi-major axis of an orbit
3.875294529485345
mean anomaly
84.4141028542668
longitude of ascending node
326.7640232881891
argument of periapsis
339.4307539042837
rotation period
11.84
time of periapsis
2460347.116732845
Sources (2)

via Wikidata · CC0