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
- M. F. Wolf
- Discovery site
- Heidelberg Obs.
- Discovery date
- 24 September 1917
- Pronunciation
- / ˈ k l aɪ m ɪ n h eɪ ɡ ə /
- Named after
- John Climenhaga, (Canadian astrophysicist)
- Alternative designations
- A917 SE · 1949 UE 1 , 1952 KZ · 1970 OC, 1974 VN 2 · 1974 XE, 1979 BD 1 · 1981 XD
- Minor planet category
- main-belt · Flora
- Observation arc
- 99.24 yr (36,248 days)
- Aphelion
- 2.8134 AU
- Perihelion
- 1.8349 AU
- Semi major axis
- 2.3241 AU
- Orbital period sidereal
- 3.54 yr (1,294 days)
- Mean anomaly
- 96.756 °
- Mean motion
- 0° 16 41.52 / day
- Inclination
- 4.9263°
- Longitude of ascending node
- 10.621°
- Argument of perihelion
- 314.01°
- Dimensions
- 7.82 km (calculated)
via Wikipedia infobox
Wikidata facts
- Instance of
- asteroid
- Followed by
- 3035 Chambers
- Follows
- 3033 Holbaek
- Parent body
- Sun
- Minor-planet group
- asteroid belt
- Orbital period
- 1293.51632871314
Show 17 more facts
- discoverer or inventor
- Max Wolf
- site of astronomical discovery
- Heidelberg-Königstuhl State Observatory
- provisional designation
- A917 SE
- time of discovery or invention
- 1917-09-24
- orbital eccentricity
- 0.211488045155292
- albedo
- 0.24
- absolute magnitude
- 12.74
- orbital inclination
- 4.923343647414304
- periapsis
- 1.831993553820169
- apoapsis
- 2.814717361757434
- semi-major axis of an orbit
- 2.323355457788802
- mean anomaly
- 211.1473753711745
- longitude of ascending node
- 10.46734884384131
- argument of periapsis
- 314.1222020449158
- rotation period
- 2.737485
- time of periapsis
- 2461535.34250147
- epoch
- November 21, 2025
via Wikidata · CC0
~3 min read
Encyclopedic overview
3034 Climenhaga /ˈklaɪmɪnheɪɡə/ is a stony Florian asteroid and synchronous binary asteroid from the inner regions of the asteroid belt, approximately 7.8 kilometers in diameter. The asteroid was discovered on 24 September 1917 by German astronomer Max Wolf at Heidelberg Observatory in southwest Germany and assigned provisional designation A917 SE. It was later named after Canadian astrophysicist John Climenhaga. Its minor-planet moon has a period of nearly 19 hours.
Orbital characteristics
Excerpted from Wikipedia’s “3034 Climenhaga” article, available under the CC BY-SA 4.0 licence.