(2548) Leloir
Asteroid (2548) Leloir |
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Properties of the orbit ( animation ) | |
Orbit type | Middle main belt asteroid |
Major semi-axis | 2.6325 AU |
eccentricity | 0.1027 |
Perihelion - aphelion | 2.3621 AU - 2.9029 AU |
Inclination of the orbit plane | 18.1455 ° |
Length of the ascending node | 299.5050 ° |
Argument of the periapsis | 291.9876 ° |
Time of passage of the perihelion | 13th July 2018 |
Sidereal period | 4.27 a |
Mean orbital velocity | 18.36 km / s |
Physical Properties | |
Medium diameter | 10.364 (± 0.134) km |
Albedo | 0.412 (± 0.045) |
Absolute brightness | 12.0 mag |
history | |
Explorer | El Leoncito Observatory |
Date of discovery | February 16, 1975 |
Another name | 1975 DA , 1949 CE, 1966 BM, 1976 OQ |
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. |
(2548) Leloir is an asteroid of the central main belt that was discovered on February 16, 1975 at the El Leoncito Observatory, which is located at the Felix Aguilar Observatory ( IAU code 808) in the El Leoncito National Park, Argentina . The Yale University and Columbia University used the observatory as a branch to the southern sky to watch. Since 1990 it has been called "Observatorio Carlos Cesco".
There had been several sightings of the asteroid before: on February 1 and 3, 1949 at the Royal Observatory of Belgium in Uccle under the provisional designation 1949 CE and on January 20 and 28, 1966 at the observatory on the purple mountain near Nanjing ( 1966 BM).
(2548) Leloir was named on September 18, 1986 after the Argentine biochemist Luis Federico Leloir (1906–1987), who was the first South American to receive the Nobel Prize in Chemistry in 1970 , “for the discovery of sugar nucleotides and their function in the biosynthesis of Carbohydrates ".
Web links
- (2548) Leloir in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (2548) Leloir in the Small-Body Database of the Jet Propulsion Laboratory .
- Discovery Circumstances by (2548) Leloir according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ (2548) Leloir at the IAU Minor Planet Center (English)