(415) Palatia ( German Palatia ) is a main-belt asteroid that was discovered on February 7, 1896 by German astronomer Max Wolf at the Heidelberg Observatory and is named after a territorial entity within the Holy Roman Empire , now known as Kurpfalz [1] .
(415) Palaty | |
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Asteroid | |
Opening | |
Discoverer | Max wolf |
Detection point | Heidelberg |
Date of discovery | February 7, 1896 |
Eponym | Kurffalz |
Alternative designations | 1896 CO ; 1954 MG; 1959 OF; A899 TB |
Category | Main ring |
Orbital characteristics | |
The era of November 4, 2013 JD 2456600.5 | |
Eccentricity ( e ) | 0.3012788 |
Semi-axis ( a ) | 417.676 million km (2,7919916 a. E.) |
Perihelion ( q ) | 291.839 million km (1,9508237 a. E.) |
Afhelia ( Q ) | 543.513 million km (3,6331595 a. E.) |
Period of circulation ( P ) | 1704 days (4.665 g. ) |
Average orbital speed | 17.413 km / s |
Inclination ( i ) | 8.17106 ° |
Ascending node longitude (Ω) | 126.98684 ° |
Perihelion Argument (ω) | 297.11523 ° |
Mean Anomaly ( M ) | 143.65455 ° |
physical characteristics | |
Diameter | 76.34 km |
Weight | 4.66⋅10 17 kg |
Density | 2,000 g / cm³ |
Acceleration of gravity on the surface | 0.0213 m / s² |
2nd cosmic speed | 0.0404 km / s |
Rotation period | 20.73 h |
Apparent magnitude | 14.86 m (current) |
Absolute magnitude | 9.21 m |
Albedo | 0.0628 |
Average surface temperature | 166 K (−107 ° C ) |
Current distance from the Sun | 3.47 a. e. |
Current distance from Earth | 2,737 a. e. |
Held in 1975 at the Kitt-Peak Observatory at a wavelength of 10 μm, they gave too large a diameter value for this asteroid - 93 km, which is explained by the very low radiometric albedo 0.026. In composition, it occupies an intermediate position between the spectral classes D and P and, as is supposed, in its rocks it contains enstatite in a significant amount [2] .
See also
- List of asteroids ( 401-500 )
- Small Planet Classifications
Notes
- ↑ Schmadel, Lutz D. Dictionary of Minor Planet Names . - Fifth Revised and Enlarged Edition. - B. , Heidelberg, N. Y .: Springer, 2003. - P. 49. - ISBN 3-540-00238-3 .
- ↑ Morrison, D. & Chapman, CR (March 1976), 22 asteroids , vol. 204, p. 934-939 , DOI 10.1142 / 9789812834300_0469