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
21713 Michaelolson (1999 RW97)
- Orbit class
- Main-belt Asteroid
- Absolute magnitude
- 15.500 H
- Earth MOID
- 0.902 AU
via NASA/JPL Small-Body Database
Wikidata facts
- Orbital period
- 1256.087130887443
Show 12 more facts
- provisional designation
- 1999 RW97
- time of discovery or invention
- 1999-09-07
- orbital eccentricity
- 0.1621484932368689
- orbital inclination
- 6.581779698846401
- periapsis
- 1.908891662916398
- apoapsis
- 2.647743128589826
- semi-major axis of an orbit
- 2.278317395753112
- mean anomaly
- 299.2749506359423
- longitude of ascending node
- 146.7201261846889
- argument of periapsis
- 116.6434068550355
- absolute magnitude
- 15.5
- time of periapsis
- 2461212.377647302
Sources (2)
via Wikidata · CC0