Английская Википедия:497 Iva

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Iva (minor planet designation: 497 Iva) is a main-belt asteroid orbiting the Sun, not to be confused with 1627 Ivar. It was discovered by American astronomer R. S. Dugan on 4 November 1902, and was named for Iva Shores, the young daughter of the family where he was staying in Heidelberg. This object is orbiting at a distance of Шаблон:Val with a period of Шаблон:Convert and an eccentricity of 0.3. The orbital plane is inclined at an angle of 4.8° to the plane of the ecliptic.

This asteroid is classified as an M-type asteroid and is considered anhydrous but oxidized. Further analysis of the spectra suggests the "presence of either an olivine or high-Ca pyroxene phase in addition to orthopyroxene ± Type B clinopyroxene". Analysis of light curves based on photometric data show a rotation period of Шаблон:Val with a brightness variation of Шаблон:Val in magnitude.

External links

• Lightcurve plot of 497 Iva, Palmer Divide Observatory, B. D. Warner (2009)
• Asteroid Lightcurve Database (LCDB), query form (info Шаблон:Webarchive)
• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• Шаблон:AstDys
• Шаблон:JPL small body

Шаблон:Beltasteroid-stub