Description of the KHARKIV ASTEROID MAGNITUDE-PHASE RELATIONS bundle V1.0 =================================================== Bundle Generation Date: 2020-02-28 Peer Review: 2010 Asteroid Review, Mon Jun 07 00:00:00 MST 2010 Discipline node: Small Bodies Node Content description based on the data set catalog file description for the PDS3 version, EAR-A-COMPIL-3-MAGPHASE-V1.0 ===================================================================================================================== Note: for PDS3 data sets migrated to PDS4, the following text is taken verbatim from the data set description and confidence level note of the PDS3 data set catalog file. In these cases, some details may not be correct as a description of the PDS4 bundle. This collection of magnitude-phase relations of selected asteroids has been compiled from the published literature at Kharkiv University by V.G. Shevchenko and colleagues. It contains observations dating from 1978 through 2008. Mainly the observations were performed at the Institute of Astronomy (Kharkiv, Ukraine) and at the Astrophysics Institute (Dushanbe, Tadjikistan). For most asteroids the magnitude-phase relations were obtained down to phase angles less than 1 deg. For some asteroids the magnitudes are presented in three (UBV) or four (BVRI) standard spectral bands. It is planned to update this data set annually with additional observations. The magnitude-phase relations, along with observation date, ecliptic latitude and longitude, and heliocentric and geocentric distances, are included in the file magphase.tab. The published papers for the observations are listed in the file magphaseref.tab Known issues or problems with the data ====================================== The accuracy of the asteroid absolute photometry is determined by the uncertainties of the magnitudes for standard stars and relative photometry on the night of observation. Uncertainties of the magnitudes for relative photometry are +/- 0.005-0.020 mag for the different bands. The calibrations of the magnitudes were performed with standard star sequences from Landolt (+/-0.003-0.010 mag). We have obtained the following uncertainties on magnitudes for different bands: U = +/- 0.02 a 0.03 mag; B = +/- 0.015 a 0.025 mag V = +/- 0.01 a 0.02 mag; R = +/- 0.01 a 0.02 mag I = +/- 0.015 a 0.025 mag The upper limit can be taken for the confidence level. For additional information on the confidence level of the observations see the individual published papers, listed in the file magphaseref.tab. PDS3 Source =========== Version 1.0 of this bundle was migrated from version 1.0 of the PDS3 data set EAR-A-COMPIL-3-MAGPHASE-V1.0.