(6919) Tomonaga
|
Asteroid (6919) Tomonaga |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt asteroid |
| Major semi-axis | 2.2626 AU |
| eccentricity | 0.1036 |
| Perihelion - aphelion | 2.0283 AU - 2.4969 AU |
| Inclination of the orbit plane | 5.1642 ° |
| Length of the ascending node | 137.0656 ° |
| Argument of the periapsis | 12.7571 ° |
| Time of passage of the perihelion | August 27, 2016 |
| Sidereal period | 3.40 a |
| Mean orbital velocity | 19.80 km / s |
| Physical Properties | |
| Medium diameter | 4.640 (± 0.074) km |
| Albedo | 0.306 (± 0.033) |
| Absolute brightness | 14.0 mag |
| history | |
| Explorer |
Kin Endate Kazurō Watanabe |
| Date of discovery | April 16, 1993 |
| Another name | 1993 HP , 1969 ED, 1986 EF 1 , 1986 EW 3 , 1988 YW |
| 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. | |
(6919) Tomonaga is a main inner belt asteroid discovered on April 16, 1993 by Japanese amateur astronomers Kin Endate and Kazurō Watanabe at the Kitami Observatory ( IAU code 400) on Hokkaidō . There had been several sightings of the asteroid before: on March 12 and 14, 1969 under the provisional designation 1969 ED at the Crimean Observatory in Nautschnyj , on March 5, 1986 (1986 EF 1 ) at the Anderson Mesa Station of the Lowell Observatory in Arizona , on March 12, 1986 (1986 EW 3 ) at the La Silla Observatory of the European Southern Observatory in Chile and on December 30, 1988 (1988 YW) at the Kleť Observatory near Český Krumlov .
According to the SMASS classification ( Small Main-Belt Asteroid Spectroscopic Survey ), a spectroscopic study by Gianluca Masi , Sergio Foglia and Richard P. Binzel (6919) assigned Tomonaga to the taxonomic class of C asteroids .
The asteroid was named on August 8, 1998 after the Japanese physicist Shin'ichirō Tomonaga (1906-1979), who in 1965 together with Richard Feynman and Julian Seymour Schwinger “for their fundamental achievement in quantum electrodynamics , with profound consequences for elementary particle physics” Received Nobel Prize in Physics .
See also
Web links
- (6919) Tomonaga in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (6919) Tomonaga in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances of (6919) Tomonaga according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ (6919) Tomonaga at the IAU Minor Planet Center (English)
- ^ Gianluca Masi, Sergio Foglia, Richard P. Binzel: Search for Unusual Spectroscopic Candidates Among 40313 minor planets from the 3rd Release of the Sloan Digital Sky Survey Moving Object Catalog . (English)
- ↑ subdivision of asteroids to S-types, C-types and V-types (English)
- ↑ The asteroid (7495) Feynman was named after Richard Feynman in 1997 .