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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
- T. Smirnova
- Discovery site
- Crimean Astrophysical Obs.
- Discovery date
- 30 August 1970
- Named after
- veterans , (Soviet veterans of WWII)
- Alternative designations
- 1970 QB 1 · 1955 RE, 1955 SN 1 · 1959 UA
- Minor planet category
- main-belt · Vestian
- Observation arc
- 67.05 yr (24,490 days)
- Aphelion
- 2.7415 AU
- Perihelion
- 2.0326 AU
- Semi major axis
- 2.3870 AU
- Orbital period sidereal
- 3.69 yr (1,347 days)
- Mean anomaly
- 282.05 °
- Mean motion
- 0° 16 1.92 / day
- Inclination
- 6.1789°
- Longitude of ascending node
- 338.52°
- Argument of perihelion
- 3.7456°
- Dimensions
- 5.193 ± 0.646 km , 7.46 km (calculated)
- Synodic rotation period
- 8.209 ± 0.005 h
via Wikipedia infobox
Wikidata facts
- Instance of
- asteroid
- Named after
- veteran
- Followed by
- Q146822
- Follows
- 2010 Chebyshev
- Parent body
- Sun
- Minor-planet group
- asteroid belt
- Diameter
- 5.193
- Orbital period
- 1346.964633202577
Show 17 more facts
- discoverer or inventor
- Tamara Smirnova
- site of astronomical discovery
- Crimean Astrophysical Observatory
- provisional designation
- 1970 QB1
- time of discovery or invention
- 1970-08-30
- orbital eccentricity
- 0.1484802403664695
- orbital inclination
- 6.177196546946132
- periapsis
- 2.032512573328135
- apoapsis
- 2.741334540220633
- semi-major axis of an orbit
- 2.386923556774384
- mean anomaly
- 4.117895737055119
- longitude of ascending node
- 338.4797976898805
- argument of periapsis
- 3.534234649370737
- absolute magnitude
- 13.41
- albedo
- 0.463
- rotation period
- 8.209
- time of periapsis
- 2460985.0905710375
- epoch
- November 21, 2025
Sources (3)
via Wikidata · CC0
~2 min read
Encyclopedic overview
2011 Veteraniya, provisional designation 1970 QB1, is a stony Vestian asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 30 August 1970, by Soviet astronomer Tamara Smirnova at the Crimean Astrophysical Observatory, Nauchnyj, on the Crimean peninsula, and named for the Soviet veterans of the Second World War.
Classification and orbit
Excerpted from Wikipedia’s “2011 Veteraniya” article, available under the CC BY-SA 4.0 licence.