Abstract A massive new body of data, comprised of spectrophotometry of 17 comets by Newburn and Spinrad, has now become available for calibration of the basic theory, the Semi-Empirical Photometric Theory, used for modelling of Comet Halley. A redetermination of the constant R and the function δ has been made, and no change is needed. Improved mixing ratios given as a function of heliocentric distance also permit an improvement in the constants of the visual photometric model presented at COSPAR XXIV. A new light curve for Halley and a lower dust to gas ratio prove to make roughly compensating changes in dust densities.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A new calibration of the semi-empirical photometric theory for Halley and other comets


    Contributors:

    Published in:

    Publication date :

    1984-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    ULF waves at comets halley and Giacobini-Zinner: Comparison with theory

    Le, G. / Russell, C.T. / Gary, S.P. et al. | Elsevier | 1989


    ULF waves at Comets Halley and Giacobini-Zinner - Comparison with theory

    Le, G. / Russell, C. T. / Gary, S. P. et al. | NTRS | 1989



    Centaurs - Can they Enrich the Halley Type Comets Population?

    Gabryszewski, R. / The Committee on Space Research | British Library Conference Proceedings | 2002