File:1140Crimea_(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
- G. Neujmin
- Discovery site
- Simeiz Obs.
- Discovery date
- 30 December 1929
- Named after
- Crimea , (Black Sea peninsula)
- Alternative designations
- 1929 YC · A922 HA
- Minor planet category
- main-belt · ( middle )
- Observation arc
- 82.04 yr (29,966 days)
- Aphelion
- 3.0846 AU
- Perihelion
- 2.4579 AU
- Semi major axis
- 2.7712 AU
- Orbital period sidereal
- 4.61 yr (1,685 days)
- Mean anomaly
- 64.258 °
- Mean motion
- 0° 12 48.96 / day
- Inclination
- 14.136°
- Longitude of ascending node
- 72.139°
- Argument of perihelion
- 310.16°
- Dimensions
- 27.75 ± 1.1 km ( IRAS :13) , 28.87 ± 0.36 km , 29.179 ± 0.155 km , 29.554 ± 0.205 km
- Synodic rotation period
- 9.77 ± 0.01 h , 9.784 ± 0.001 h , 9.7869 ± 0.0005 h
via Wikipedia infobox
Wikidata facts
- Instance of
- asteroid
- Named after
- Crimea
- Followed by
- Q136418
- Follows
- Q136379
- Parent body
- Sun
- Minor-planet group
- asteroid belt
- Diameter
- 29.179
- Orbital period
- 1686.137440923054
- Image
- 1140Crimea (Lightcurve Inversion).png
Show 19 more facts
- discoverer or inventor
- Grigory Neujmin
- site of astronomical discovery
- Simeiz Observatory
- provisional designation
- A922 HA
- time of discovery or invention
- 1929-12-30
- Commons category
- 1140 Crimea
- orbital eccentricity
- 0.1098125144496248
- absolute magnitude
- 9.96
- orbital inclination
- 14.11692764861431
- periapsis
- 2.46799635935143
- apoapsis
- 3.076894799898118
- semi-major axis of an orbit
- 2.772445579624774
- mean anomaly
- 344.1852579099499
- longitude of ascending node
- 72.0570110920196
- argument of periapsis
- 310.6481128911876
- albedo
- 0.16
- rotation period
- 9.77
- asteroid spectral type
- S-type asteroid
- time of periapsis
- 2461074.571746546
- epoch
- November 21, 2025
Sources (2)
via Wikidata · CC0
~3 min read
Encyclopedic overview
1140 Crimea, provisional designation 1929 YC, is a stony asteroid from the middle region of the asteroid belt, approximately 28 kilometers in diameter. It was discovered on 30 December 1929, by Soviet astronomer Grigory Neujmin at Simeiz Observatory on the Crimean peninsula, after which it was named.
Orbit and classification
Excerpted from Wikipedia’s “1140 Crimea” article, available under the CC BY-SA 4.0 licence.