ON THE POLARIZATION OPPOSITION EFFECT OF E-TYPE ASTEROID 64-ANGELINA

Polarimetric observations of the high-albedo asteroid 64 Angelina were done for the purpose of searching for a polarization opposition effec t at phase angles of less than 2.4 degrees, We have found a second inv ersion angle of about 1.5 degrees and positive polarization of 0.5% at a phase angle of 0.5 degrees. For comparison the polarimetric observa tions of Comet P/Ashbrook-Jackson are given, Different theoretical app roaches to the explanation of this phenomenon are discussed. (C) 1996 Academic Press, Inc.