(2112) Ulyanov
|
Asteroid (2112) Ulyanov |
|
|---|---|
.png)
|
|
| A model by (2112) Ulyanov based on the light curve according to data from Charles University in Prague | |
| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt asteroid |
| Major semi-axis | 2.2536 AU |
| eccentricity | 0.1379 |
| Perihelion - aphelion | 1.9430 AU - 2.5643 AU |
| Inclination of the orbit plane | 3.3722 ° |
| Length of the ascending node | 243.6988 ° |
| Argument of the periapsis | 156.1727 ° |
| Time of passage of the perihelion | April 16, 2017 |
| Sidereal period | 3.38 a |
| Mean orbital velocity | 19.84 km / s |
| Physical Properties | |
| Medium diameter | 7.480 (± 0.215) km |
| Albedo | 0.380 (± 0.044) |
| Rotation period | 3.041 h |
| Absolute brightness | 12.3 mag |
| history | |
| Explorer | Tamara Smirnova |
| Date of discovery | July 13, 1972 |
| Another name | 1972 NP , A908 SC, 1949 YC, 1952 UU 1 , 1962 RA, 1968 KB, 1969 UB 2 , 1976 YD 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. | |
(2112) Ulyanov is an asteroid of the main inner belt , which was discovered by the Soviet astronomer Tamara Smirnova on July 13, 1972 at the Crimean Observatory in Nautschnyj ( IAU code 095).
There had been several sightings of the asteroid before: on September 21, 1908 under the provisional designation A908 SC or 1908 SC at the State Observatory Heidelberg-Königstuhl , on December 23, 1949 (1949 YC) at the Royal Observatory of Belgium in Uccle , on October 16, 1952 (1952 UU 1 ) at the Crimean Observatory in Simejis , on September 6, 1962 (1962 RA) at the Goethe Link Observatory in Indiana and on October 17, 1969 (1969 UB 2 ) at the Crimean Observatory in Nautschnyj .
The Italian astronomer Vincenzo Zappalà defined in a publication from 1995 (et al.) That (2112) Ulyanov belonged to the Flora family, a large group of asteroids named after (8) Flora . Asteroids of this family move in a 4: 9 orbital resonance with the planet Mars around the sun . The group is also called the Ariadne family, after the asteroid (43) Ariadne .
(2112) Ulyanov assumes a rotation period of about three hours. This value has been confirmed several times, first in 2003/04 by Chester Maleszewski and Maurice Clarke at the Bucknell Observatory in Lewisburg , Pennsylvania , then in 2009 by Brian D. Warner , on September 19 and 20, 2013 by Robert D. Stephens at the Center for Solar System Studies in Rancho Cucamonga , California , on September 24th and 25th by Vladimir Benishek at the Sopot Astronomical Observatory in Sopot near Belgrade and in 2015 by Adam Waszczak, Chan-Kao Chang, Eran Ofek et al.
(2112) Ulyanov was named on April 1, 1980 after Alexander Ulyanov (1866-1887), a brother of Lenin . The asteroid (852) Wladilena is named after Lenin .
Web links
- (2112) Ulyanov in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (2112) Ulyanov in the Small-Body Database of the Jet Propulsion Laboratory .
- Discovery Circumstances by (2112) Ulyanov according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ (2112) Ulyanov at the IAU Minor Planet Center (English)
- ↑ Database with the assignment of 12,487 asteroids to asteroid groups (English)
- ↑ Chester Maleszewski, Maurice Clarke: Bucknell University Observatory lightcurve results for 2003-2004 . The Minor Planet Bulletin, Vol. 31, No. 4, page 93f, 2004 (English)
- ^ Robert D. Stephens: Asteroids Observed from CS3: 2013 July – September . The Minor Planet Bulletin, Vol. 41, No. 1, page 13f, 2014 (English)
- ↑ Vladimir Benishek: Rotation Period Determinations for 1425 Tuorla , 1468 Zomba , 1486 Marilyn , 2112 Ulyanov and (105158) 2000 OL . The Minor Planet Bulletin, Vol. 41, No. 2, page 126f, 2014 (English)