File:441Bathilde_(Lightcurve_Inversion).png · Wikimedia Commons · See Wikimedia Commons
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
Key facts
- Discovered by
- Auguste Charlois
- Discovery date
- 8 December 1898
- Pronunciation
- French: [ batildᵊ ]
- Named after
- unknown ( Bathilde )
- Alternative designations
- 1898 ED
- Minor planet category
- Main belt
- Observation arc
- 117.20 yr (42808 d)
- Aphelion
- 3.0266 AU (452.77 Gm )
- Perihelion
- 2.58642 AU (386.923 Gm)
- Semi major axis
- 2.80651 AU (419.848 Gm)
- Orbital period sidereal
- 4.70 yr (1717.3 d )
- Mean anomaly
- 348.249 °
- Mean motion
- 0° 12 34.668 / day
- Inclination
- 8.1476°
- Longitude of ascending node
- 253.585°
- Argument of perihelion
- 201.62°
- Earth moid
- 1.60331 AU (239.852 Gm)
- Jupiter moid
- 2.16565 AU (323.977 Gm)
via Wikipedia infobox
Wikidata facts
- Diameter
- 65.131
- Orbital period
- 1716.747654834199
- Image
- 441Bathilde (Lightcurve Inversion).png
Show 15 more facts
- provisional designation
- A898 XA
- time of discovery or invention
- 1898-12-08
- orbital inclination
- 8.15943328161716
- Commons category
- 441 Bathilde
- albedo
- 0.204
- rotation period
- 10.446
- absolute magnitude
- 8.65
- orbital eccentricity
- 0.08251113665590105
- semi-major axis of an orbit
- 2.80589893322945
- periapsis
- 2.574381022907108
- apoapsis
- 3.037416843551792
- longitude of ascending node
- 253.5010186075156
- argument of periapsis
- 202.8115959007216
- mean anomaly
- 339.8229323918612
- time of periapsis
- 2461096.7192597156
via Wikidata · CC0
~1 min read
Article
441 Bathilde is a large main belt asteroid that was discovered by French astronomer Auguste Charlois on 8 December 1898 in Nice. 441 Bathilde is orbiting close to a 5:2 mean motion resonance with Jupiter, which is located at 2.824 AU.
10μ radiometric data collected from Kitt Peak in 1975 gave a diameter estimate of 64 km.