Polarization phase dependences of asteroids 55 Pandora and 704 Interamnia.

Details Polarization phase dependences of asteroids 55 Pandora and 704 Interamnia. Polarization phase dependences of asteroids 55 Pandora and 704 Interamnia.

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994kfnt...10...40l&link_type=abstract

Kinematika Fiz. Nebesn. Tel, Tom 10, No. 2, p. 40 - 44

Physics

5

Minor Planets: Polarimetry, Minor Planets: Classification, Minor Planets: Albedo

Scientific paper

Phase dependences of polarization in the phase angle range 0.3 - 15.5° for Pandora and 9.5 - 22.1° for Interamnia were obtained. The new estimate of the geometrical albedo indicates unambiguously that Pandora is an M-type asteroid, and its high albedo measured by IRAS satellite and its classification as E-asteroid are mistaken. The new value of Pandora's diameter is 89 km, about a third larger than the IRAS-data value. The extremely low value of the inversion angle of Interamnia polarization phase curve αinv = 15.7° is confirmed. The wavelength dependence of Interamnia polarization for negative and positive branches of the polarization phase curve was obtained and analysed.

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