(785) Tsvetana ( lat.Zwetana ) - an asteroid of the main belt , which belongs to the spectral class M. It was discovered on March 30, 1914 by the German astronomer Adam Massinger at the Heidelberg Observatory and named after Tsvetana Popova, daughter of Sofia resident professor K. Popov [1] .
| (785) Tsvetana | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | Adam Massinger |
| Place of discovery | Heidelberg |
| Discovery date | March 30, 1914 |
| Alternative notation | 1914 UN ; 1929 YB; 1931 MC; 1953 UF 1 ; 1972 CD; A904 VA |
| Category | Main ring |
| Orbital characteristics | |
| Age of February 16, 2017 JD 2457800.5 | |
| Eccentricity ( e ) | 0.2108275 |
| Semimajor axis ( a ) | 384.287 million km (2,5688026 AU ) |
| Perihelion ( q ) | 303.269 million km (2.0272284 AU) |
| Aphelion ( Q ) | 465.306 million km (3,1103768 AU) |
| Circulation Period ( P ) | 1,503,815 days (4.117 g. ) |
| Average orbital speed | 18.375 km / s |
| Inclination ( i ) | 12.76891 ° |
| Longitude node (Ω) | 71.88052 ° |
| Perihelion Argument (ω) | 131.59861 ° |
| Median Anomaly ( M ) | 316,09732 ° |
| physical characteristics | |
| Diameter | 49.46 km |
| Rotation period | 8.8882 h |
| Spectral class | M (Cb) |
| Apparent magnitude | 14.4 m (current) |
| Absolute magnitude | 9.45 m |
| Albedo | 0,120 |
| Current distance from the sun | 3.11 a. e. |
| Current distance from earth | 2.264 a. e. |
The orbit of the asteroid Tsvetan and its position in the solar system
Observations revealed significant heterogeneities in the distribution of the chemical and mineralogical composition of the surface substance of the asteroid, which manifest themselves at different phases of rotation [2] .
See also
- List of asteroids ( 701-800 )
- Classifications of Minor Planets
Notes
- ↑ Schmadel, Lutz D. Dictionary of Minor Planet Names . - Fifth Revised and Enlarged Edition. - B. , Heidelberg, N. Y .: Springer, 2003 .-- P. 74. - ISBN 3-540-00238-3 .
- ↑ Busarev V.V. New reflection spectra of 40 asteroids: comparison with previous results and interpretation // Astron. Vestn. - 2016 .-- T. 50 , no. 1 . - S. 15-26 .