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
- E. F. Skvortsov
- Discovery site
- Simeiz Obs.
- Discovery date
- 3 August 1930
- Named after
- Alexander Dubyago , (also spelled: Dubiago )
- Alternative designations
- 1930 PB · 1931 VJ 1 , 1938 WW · 1950 QX, A924 RF
- Minor planet category
- main-belt · ( outer )
- Observation arc
- 86.71 yr (31,671 days)
- Aphelion
- 3.6517 AU
- Perihelion
- 3.1772 AU
- Semi major axis
- 3.4145 AU
- Orbital period sidereal
- 6.31 yr (2,305 days)
- Mean anomaly
- 314.09 °
- Mean motion
- 0° 9 22.32 / day
- Inclination
- 5.7477°
- Longitude of ascending node
- 223.39°
- Argument of perihelion
- 71.344°
- Dimensions
- 63.12 ± 5.6 km ( IRAS :17) , 75.79 ± 0.90 km
- Synodic rotation period
- 14.3 h , 34.8374 ± 0.0990 h
via Wikipedia infobox
~3 min read
Encyclopedic overview
1167 Dubiago, provisional designation 1930 PB, is a dark asteroid from the outer region of the asteroid belt, approximately 63 kilometers in diameter. It was discovered on 3 August 1930, by Soviet astronomer Evgenii Skvortsov at Simeiz Observatory on the Crimean peninsula, and named after astronomer Alexander Dubyago.
Classification and orbit
Excerpted from Wikipedia’s “1167 Dubiago” article, available under the CC BY-SA 4.0 licence.