
Image by Carlos_Ramón_Bonilla on Pixabay · Pixabay License
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
- R. H. Frost
- Discovery site
- Arequipa
- Discovery date
- 21 August 1902
- Named after
- Mama Qawa , third queen of the Kingdom of Cuzco
- Alternative designations
- 1902 LL
- Observation arc
- 112.24 yr (40994 d)
- Aphelion
- 3.3432 AU (500.14 Gm )
- Perihelion
- 2.0229 AU (302.62 Gm)
- Semi major axis
- 2.6831 AU (401.39 Gm)
- Orbital period sidereal
- 4.40 yr (1605.3 d )
- Mean anomaly
- 219.54 °
- Mean motion
- 0° 13 27.336 / day
- Inclination
- 9.8406°
- Longitude of ascending node
- 90.876°
- Argument of perihelion
- 337.156°
- Dimensions
- 101.51 ± 1.83 km , 115 km
- Mass
- (3.99 ± 3.84) × 10 kg
- Synodic rotation period
- 8.1789 h (0.34079 d )
via Wikipedia infobox
Wikidata facts
- Diameter
- 115.0
- Orbital period
- 1608.985226963587
- Image
- 505Cava (Lightcurve Inversion).png
Show 15 more facts
- provisional designation
- A902 QA
- time of discovery or invention
- 1902-08-21
- orbital inclination
- 9.822321516294833
- albedo
- 0.040
- Commons category
- 505 Cava
- rotation period
- 8.1789
- absolute magnitude
- 8.75
- orbital eccentricity
- 0.2425640104572177
- semi-major axis of an orbit
- 2.687215029428718
- periapsis
- 2.035393374929578
- apoapsis
- 3.339036683927858
- longitude of ascending node
- 90.75846779333344
- argument of periapsis
- 337.1801502259413
- mean anomaly
- 260.9852812228927
- time of periapsis
- 2461443.0367215676
Sources (3)
via Wikidata · CC0
~1 min read
Article
505 Cava is a minor planet orbiting the Sun.
In 2001, the asteroid was detected by radar from the Arecibo Observatory at a distance of 1.18 AU. The resulting data yielded an effective diameter of 105 ± 17 km.