File:001173-asteroid_shape_model_(1173)_Anchises.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
- K. Reinmuth
- Discovery site
- Heidelberg Obs.
- Discovery date
- 17 October 1930
- Pronunciation
- / æ ŋ ˈ k aɪ s iː z /
- Named after
- Anchises (Greek mythology)
- Alternative designations
- 1930 UB
- Minor planet category
- Jupiter trojan , Trojan · background
- Adjectives
- Anchisian
- Observation arc
- 87.60 yr (31,997 d)
- Aphelion
- 6.0232 AU
- Perihelion
- 4.5678 AU
- Semi major axis
- 5.2955 AU
- Orbital period sidereal
- 12.19 yr (4,451 d)
- Mean anomaly
- 184.44 °
- Mean motion
- 0° 4 51.24 / day
- Inclination
- 6.9202°
- Longitude of ascending node
- 283.91°
- Argument of perihelion
- 40.496°
via Wikipedia infobox
Wikidata facts
- Instance of
- asteroid
- Named after
- Anchises
- Followed by
- Q136762
- Follows
- 1172 Äneas
- Parent body
- Sun
- Diameter
- 99.549
- Orbital period
- 4418.852572351573
- Image
- 001173-asteroid shape model (1173) Anchises.png
Show 19 more facts
- discoverer or inventor
- Karl Wilhelm Reinmuth
- site of astronomical discovery
- Heidelberg-Königstuhl State Observatory
- provisional designation
- 1930 UB
- time of discovery or invention
- 1930-10-17
- orbital inclination
- 6.92672542614777
- orbital eccentricity
- 0.1376350134952913
- albedo
- 0.05
- periapsis
- 4.544629731793215
- apoapsis
- 5.995292001841317
- semi-major axis of an orbit
- 5.269960866817266
- mean anomaly
- 50.96564811733352
- argument of periapsis
- 41.43868816960386
- absolute magnitude
- 8.93
- Commons category
- 1173 Anchises
- rotation period
- 11.595
- asteroid spectral type
- P-type asteroid
- longitude of ascending node
- 283.9012656044843
- time of periapsis
- 2460374.9175408753
- epoch
- November 21, 2025
via Wikidata · CC0
~5 min read
Encyclopedic overview
1173 Anchises /æŋˈkaɪsiːz/ is an unusually elongated Jupiter Trojan from the Trojan camp, approximately 124 kilometers (77 miles) in diameter. It was discovered on 17 October 1930, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany, and was the 9th such body to be discovered. The primitive P-type asteroid belongs to the largest Jupiter trojans, has an unusually smooth surface texture, the lowest spectral slope of all members of the Trojan camp, and a rotation period of 11.6 hours. It was named after Anchises from Greek mythology.
Orbit and classification
Excerpted from Wikipedia’s “1173 Anchises” article, available under the CC BY-SA 4.0 licence.