(2123) Vltava
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Asteroid (2123) Vltava |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Asteroid family | Koronis family |
| Major semi-axis | 2.8608 AU |
| eccentricity | 0.0781 |
| Perihelion - aphelion | 2.6374 AU - 3.0843 AU |
| Inclination of the orbit plane | 1.0113 ° |
| Length of the ascending node | 311.6452 ° |
| Argument of the periapsis | 59.4864 ° |
| Sidereal period | 4.84 a |
| Mean orbital velocity | 17.61 km / s |
| Physical Properties | |
| Medium diameter | 14.42 km (± 1.3) |
| Albedo | 0.2135 (± 0.046) |
| Absolute brightness | 11.50 likes |
| history | |
| Explorer | Nikolai Tschernych |
| Date of discovery | 22nd September 1973 |
| Another name | 1973 SL 2 , 1934 PB, 1936 AE, 1942 EV, 1951 AQ 1 , 1954 UL, 1956 AJ, 1956 CE, 1964 VZ, 1975 AR, 1977 JB 1 , 1978 SO |
| 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. | |
(2123) Vltava is an asteroid of the main outer belt , which was discovered by the Soviet astronomer Nikolai Tschernych on September 22, 1973 at the Crimean Observatory in Nautschnyj ( IAU code 095).
There had already been several unconfirmed sightings of the asteroid: including on 10 and August 1934 under the provisional designation 1934 PB and on 14 and 15 January 1936 (1936 AE) at the State Observatory in Heidelberg-Königstuhl , on March 12, 1942 (1942 EV) at the Iso-Heikkilä Observatory of the University of Turku , on January 12 and 13, 1951 (1951 AQ 1 ) at the McDonald Observatory in Texas and on October 22, 1954 (1954 UL) and November 6, 1964 (1964 VZ) at the Goethe Link Observatory in Indiana .
The asteroid is a member of the Koronis family, a group of asteroids named after (158) Koronis . The timeless (not osculating ) orbital elements of (2123) Vltava are almost identical to those of the smaller, if one assumes the absolute brightness of 16.1 compared to 11.50, asteroids (143679) 2003 SK 236 . The mean diameter of (2123) Vltava was determined to be 14.42 km (± 1.3), the geometric albedo as 0.2135 (± 0.046). However, these values are not very reliable as they are based on only two infrared spectroscopies . As part of his Koronis project, the astronomer Stephen Slivan tried to determine the light curve and thus the rotation period of (2123) Vltava. However, for observations in January 1999 and November and December 2003, the data were very inconsistent. Slivan therefore assumes an irregular shape of the asteroid.
(2123) Vltava was named on April 1, 1980 after the Vltava , the longest river in the Czech Republic flowing through Prague . Vltava is the Czech name of the river.
Web links
- (2123) Vltava in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (2123) Vltava in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances of (2123) Vltava according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ (2123) Vltava at the IAU Minor Planet Center (English)
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)
- ↑ Stephen Slivan, Richard P. Binzel , Sharida Boroumand, Margaret Pan, Christine Simpson, James Tanabe, Rosalinda Villastrigo, Lesley Yen, Richard Ditteon, Donald P. Pray , Robert D. Stephens: Rotation rates in the Koronis family, complete to H. ≈11.2 . Icarus 2008, Volume 195, Page 267f (English)