(2191) Uppsala
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Asteroid (2191) Uppsala |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Asteroid family | Eos family |
| Major semi-axis | 3.0204 AU |
| eccentricity | 0.0821 |
| Perihelion - aphelion | 2.7724 AU - 3.2683 AU |
| Inclination of the orbit plane | 9.0239 ° |
| Length of the ascending node | 247.4342 ° |
| Argument of the periapsis | 178.7571 ° |
| Sidereal period | 5.25 a |
| Mean orbital velocity | 17.15 km / s |
| Physical Properties | |
| Medium diameter | 17.54 (± 1.3) km |
| Albedo | 0.1734 (± 0.029) |
| Absolute brightness | 11.1 mag |
| history | |
| Explorer | Claes-Ingvar Lagerkvist |
| Date of discovery | August 6, 1977 |
| Another name | 1977 PA 1 , 1925 VL, 1957 WJ 2 , 1972 RP 3 , 1978 VB 1 |
| 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. | |
(2191) Uppsala is an asteroid of the main outer belt , which was discovered by the Swedish astronomer Claes-Ingvar Lagerkvist on August 6, 1977 at the 50 cm Schmidt telescope of the Uppsala Astronomical Observatory . The telescope was in the Mount Stromlo Observatory ( IAU code 414) on Mount Stromlo near Canberra , Australia from 1957 to 1982 .
Unconfirmed sightings of the asteroid had already been made on November 15, 1925 (with the provisional designation 1925 VL) at the Heidelberg-Königstuhl State Observatory , on November 26, 1957 (1957 WJ 2 ) at the Lowell Observatory in Arizona and on September 5, 1972 (1972 RP 3 ) at the Crimean Observatory in Nautschnyj .
The asteroid belongs to the Eos family , a group of asteroids which typically have large semiaxes from 2.95 to 3.1 AU , bounded inward by the Kirkwood gap of the 7: 3 resonance with Jupiter , and orbital inclinations between 8 ° and 12 °. The group is named after the asteroid (221) Eos . The family is believed to have emerged from a collision more than a billion years ago.
(2191) Uppsala has a mean diameter of 17.54 km (± 1.3). Its albedo of 0.1734 (± 0.029) is comparable to that of Mars (0.15).
The asteroid was named on April 1, 1980 after the Swedish city of Uppsala and Uppsala University , the oldest still existing university in Scandinavia .
Web links
- (2191) Uppsala in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (2191) Uppsala in the Small-Body Database of the Jet Propulsion Laboratory .
Individual evidence
- ↑ (2191) Uppsala at the IAU Minor Planet Center (English)
- ↑ David Vokrouhlický , Miroslav Brož , Alessandro Morbidelli , William Bottke , David Nesvorný , Daniel Lazzaro, Andy Rivkin: Yarkovsky footprints in the Eos family ( PDF , English)
- ↑ Page of the asteroid on the website of the Department of Physics and Astronomy of Uppsala University (English)