(4001) Ptolemy
Asteroid (4001) Ptolemy |
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Properties of the orbit ( animation ) | |
Orbit type | Main belt asteroid |
Asteroid family | Duponta family |
Major semi-axis | 2.2869 AU |
eccentricity | 0.1732 |
Perihelion - aphelion | 1.8909 AU - 2.6829 AU |
Inclination of the orbit plane | 5.4592 ° |
Length of the ascending node | 130.7260 ° |
Argument of the periapsis | 204.0486 ° |
Sidereal period | 3.46 a |
Mean orbital velocity | 19.69 km / s |
Physical Properties | |
Absolute brightness | 13.5 likes |
Spectral class | SMASSII : S. |
history | |
Explorer | Karl Wilhelm Reinmuth |
Date of discovery | August 2, 1949 |
Another name | 1949 PV , 1949 QD 1 , 1982 BU 9 , 1987 OE |
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. |
(4001) Ptolemaeus is a main belt asteroid that was discovered on August 2, 1949 by the German astronomer Karl Wilhelm Reinmuth from the State Observatory in Heidelberg-Königstuhl ( observatory code 024).
The asteroid was named after the Greek mathematician , geographer , astronomer , astrologer , music theorist and philosopher Claudius Ptolemy , whose three works on astronomy, geography and astrology in Europe were important extensive data collections and standard scientific works until the early modern period.
See also
Web links
- Asteroid Ptolemaeus: Discovery Circumstances according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
- (4001) Ptolemaeus in the Small-Body Database of the Jet Propulsion Laboratory (English).
- (4001) Ptolemaeus in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).