(8373) Stevengould ( Latin Stephengould ) is a double asteroid [2] of the outer part of the main belt , which is part of the Grikva family [3] . It was discovered on January 1, 1992 by American astronomers Carolyn Shoemaker and Eugene Shoemaker at the Palomar Observatory and named after the American paleontologist Stephen Gould [4] .
- Orbit of the asteroid Stevenguld and its position in the solar system
| (8373) Stevenguld | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | Carolyn Shoemaker , Eugene Shoemaker |
| Place of discovery | Palomar |
| Discovery date | January 1, 1992 |
| Eponym | Stephen Gould |
| Alternative notation | 1992 AB |
| Category | Main ring ( Family Grikva ) |
| Orbital characteristics [1] | |
| Age of January 13, 2016 JD 2457400.5 | |
| Eccentricity ( e ) | 0.5549466 |
| Semimajor axis ( a ) | 490.656 million km (3,2798321 AU ) |
| Perihelion ( q ) | 218.368 million km (1.4597004 AU) |
| Aphelion ( Q ) | 762.944 million km (5,0999638 AU) |
| Circulation Period ( P ) | 2169.581 days (5.94 g. ) |
| Average orbital speed | 15.09 km / s |
| Inclination ( i ) | 40.79234 ° |
| Longitude node (Ω) | 88.87216 ° |
| Perihelion Argument (ω) | 358.00397 ° |
| Median Anomaly ( M ) | 55.50189 ° |
| physical characteristics | |
| Diameter | 5.29 km |
| Rotation period | 4,435 h |
| Apparent magnitude | 20.25 m (current) |
| Absolute magnitude | 14.0 m |
| Current distance from the sun | 4.075 a. e. |
| Current distance from earth | 3.264 a. e. |
The asteroid is characterized by a large inclination of the orbit (over 40 °) and occupies the second place in this indicator among the first 10,000 asteroids, second only to the Hopi asteroid (2938) . In addition, this body is one of the few asteroids located in the zone of action of the strongest orbital resonance with Jupiter 2: 1 [5] .
Also in 2010, a small satellite with a diameter of 1.43 km was discovered around this asteroid, which rotates around it in an orbit with a radius of about 15 km with a period of 1 day 10 hours and 9 minutes [2] .
See also
- List of asteroids ( 8301–8400 )
- Classifications of Minor Planets
- Asteroid family
Notes
- ↑ (8373) Stephengould unopened (unavailable link) . AstDyS . Italy: University of Pisa . Date of treatment December 10, 2008. Archived on May 26, 2011.
- ↑ 1 2 Robert Johnston. (8373) Stephengould . johnstonsarchive.net (September 21, 2014). Date of treatment May 29, 2015.
- ↑ Moore, Patrick & Rees, Robin, eds. (2011), Patrick Moore's Data Book of Astronomy (2nd ed.), Cambridge University Press, p. 164–165 , < https://books.google.com/books?id=2FNfjWKBZx8C&pg=PA165 >
- ↑ Schmadel, Lutz D. Dictionary of Minor Planet Names . - Fifth Revised and Enlarged Edition. - B. , Heidelberg, N. Y .: Springer, 2003 .-- P. 646. - ISBN 3-540-00238-3 .
- ↑ Roig, F .; Nesvorný, D .; Ferraz-Mello, S. Asteroids in the 2: 1 resonance with Jupiter: dynamics and size distribution // Monthly Notices of the Royal Astronomical Society : journal. - Oxford University Press , 2002 .-- September ( vol. 335 , no. 2 ). - P. 417-431 . - DOI : 10.1046 / j.1365-8711.2002.05635.x . - .