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
(285331) 1999 FN53
- Orbit class
- Near-Earth
- Semi-major axis
- 1.736 AU
- Eccentricity
- 0.456
- Inclination
- 20.156 °
- Absolute magnitude
- 18.190 H
via Minor Planet Center
Wikidata facts
- Instance of
- near-Earth object
- Parent body
- Sun
- Minor-planet group
- Apollo asteroid
- Diameter
- 0.654
- Orbital period
- 834.8620771206917
- Image
- 1999 FN53 close approach 2015-05-14.jpg
Show 18 more facts
- discoverer or inventor
- Lowell Observatory Near-Earth-Object Search
- site of astronomical discovery
- Anderson Mesa Station
- absolute magnitude
- 18.2
- mean anomaly
- 126.9952921543627
- argument of periapsis
- 191.7351986646507
- Commons category
- (285331) 1999 FN53
- time of discovery or invention
- 1999-03-31
- provisional designation
- 1999 FN53
- albedo
- 0.198
- rotation period
- 4.42
- orbital eccentricity
- 0.4561869758747825
- semi-major axis of an orbit
- 1.73517868755741
- periapsis
- 0.943612769478221
- apoapsis
- 2.526744605636599
- orbital inclination
- 20.1700592441845
- longitude of ascending node
- 50.56916961315396
- time of periapsis
- 2460505.9901294652
- epoch
- May 5, 2025
Sources (3)
via Wikidata · CC0