Picture of the Day · NASA
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
54932 Waltharris (2001 OH103)
- Orbit class
- Main-belt Asteroid
- Diameter
- 7.954 km
- Albedo
- 0.023
- Absolute magnitude
- 14.980 H
- Earth MOID
- 1.540 AU
via NASA/JPL Small-Body Database
Wikidata facts
- Instance of
- asteroid
- Parent body
- Sun
- Minor-planet group
- asteroid belt
- Diameter
- 7.954
- Orbital period
- 1986.701743929297
Show 16 more facts
- time of discovery or invention
- 2001-07-27
- site of astronomical discovery
- Anderson Mesa Station
- discoverer or inventor
- Lowell Observatory Near-Earth-Object Search
- provisional designation
- 2001 OH103
- albedo
- 0.023
- absolute magnitude
- 14.98
- orbital eccentricity
- 0.1779170062826563
- semi-major axis of an orbit
- 3.092830817482136
- periapsis
- 2.542563617496974
- apoapsis
- 3.643098017467298
- orbital inclination
- 1.778317030926382
- longitude of ascending node
- 54.46538839384917
- argument of periapsis
- 306.7808214980682
- mean anomaly
- 132.0510920915942
- time of periapsis
- 2460271.7607362606
- epoch
- November 21, 2025
via Wikidata · CC0