(9135) Lacaille
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Asteroid (9135) Lacaille |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.3109 AU |
| eccentricity | 0.1316 |
| Perihelion - aphelion | 2.0069 AU - 2.6149 AU |
| Inclination of the orbit plane | 6.4575 ° |
| Length of the ascending node | 45.8100 ° |
| Argument of the periapsis | 228.9104 ° |
| Sidereal period | 3.51 a |
| Mean orbital velocity | 19.59 km / s |
| Physical Properties | |
| Absolute brightness | 15.0 mag |
| history | |
| Explorer |
C. J. v. Houten , I. v. Houten-Groeneveld T. Gehrels |
| Date of discovery | October 17, 1960 |
| Another name | 7609 PL , 1994 EK 6 |
| 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. | |
(9135) Lacaille is an asteroid of the main belt , which on 17 October 1960 by the Dutch astronomer Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld and Tom Gehrels at Palomar Observatory ( observatory code 675) in California was discovered.
The asteroid was named on April 2, 1999 after the French astronomer Nicolas Louis de Lacaille (1713–1762), who carried out measurements at the Cape of Good Hope from 1750 to 1754 in order to calculate the parallaxes of the Moon , Venus and Mars more precisely can.
In addition, he observed the constellations of the southern sky and cataloged almost 10,000 stars. He is the namesake of 14 of the 88 modern constellations .
See also
Web links
- Asteroid Lacaille: Discovery Circumstances according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
- Asteroid Lacaille in the Small-Body Database of NASA's Jet Propulsion Laboratory at the California Institute of Technology, Pasadena, USA
- (9135) Lacaille in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).