(856) Backlunda ( lat. Backlunda ) - a typical asteroid of the main belt belonging to the spectral class C. The asteroid was discovered on April 3, 1916 by the Russian astronomer Sergei Ivanovich Belyavsky in the Simeiz Observatory , in the Crimea and named after the Russian and Swedish astronomer Oscar Bucklund . [1] [2]
| (856) Backlund | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | S. Belyavsky |
| Place of discovery | Crimea (Simeiz) |
| Discovery date | April 3, 1916 |
| Eponym | Oscar Backlund |
| Alternative notation | A916 GQ; 1955 PB; 1955 QO1; 1958 LA; 1959 SQ; 1962 MA; A908 CB |
| Category | Main ring |
| Orbital characteristics | |
| Age of April 27, 2019 JD 2458600.5 | |
| Eccentricity ( e ) | 0,11892 |
| Semimajor axis ( a ) | 364.414 million km (2,43596 AU ) |
| Perihelion ( q ) | 321.078 million km (2.14628 AE) |
| Aphelion ( Q ) | 407.751 million km (2.72564 AU) |
| Circulation Period ( P ) | 1388.685 days (3.802 g. ) |
| Average orbital speed | 19.016 km / s |
| Inclination ( i ) | 14.320 ° |
| Longitude node (Ω) | 125.552 ° |
| Perihelion Argument (ω) | 73.288 ° |
| Median Anomaly ( M ) | 33.734 ° |
| physical characteristics | |
| Diameter | 45,449 km |
| Rotation period | 12.08 h |
| Spectral class | C |
| Apparent magnitude | 14.92 m (current) |
| Absolute magnitude | 10.69 m |
| Albedo | 0,045 |
| Current distance from the sun | 2,328 a. e. |
| Current distance from earth | 1,788 a. e. |
The asteroid was discovered during the First World War, and data on it did not immediately fall into the hands of the international community. Because of this, the asteroid has different designations, and its serial number is greater than the asteroids discovered chronologically later.
Due to the small reflectivity in the visible range of light, a heated asteroid in the infrared spectrum emits quite a lot of light. This fact allows its use in the calibration of infrared telescopes, for example, Spitzer [3]
See also
- List of Asteroids ( 801-900 )
- Classifications of Minor Planets
Notes
- ↑ IAU Minor Planet Center . www.minorplanetcenter.net. Date of treatment June 25, 2019.
- ↑ https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000856#content
- ↑ John Stansberry. Absolute Calibration and Characterization of the Multiband Imaging Photometer for Spitzer. III. An Asteroid-based Calibration of MIPS at 160 microns // Astrophysics DOI: 10.1086 / 521880. - 2007.
Links
NASA JPL Small Solar System Bodies (856 Backlunda )
Schmadel, Lutz D. Dictionary of Minor Planet Names . - Fifth Revised and Enlarged Edition. - B. , Heidelberg, N. Y .: Springer, 2003 .-- 992 p. - ISBN 3-540-00238-3 . .