Five-color photoelectric photometry of asteroid 433 Eros

Details Five-color photoelectric photometry of asteroid 433 Eros Five-color photoelectric photometry of asteroid 433 Eros

May 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976icar...28...43m&link_type=abstract

Icarus, vol. 28, May 1976, p. 43-51.

Astronomy and Astrophysics

Astronomy

Asteroids, Astronomical Photometry, Electrophotometers, Ubv Spectra, Diurnal Variations, Light Curve, Tables (Data)

Scientific paper

Five-color (UVBGR) photoelectric light curves of Eros are presented which were obtained on nine nights during the asteroid's 1974/75 close apparition. Indications that three reversals occurred in the relative depths of the two minima between late December 1974 and late January 1975 are noted along with definite evidence of phase reddening. The maximum amplitude observed was 1.44 magnitudes, and the absolute visual magnitude at primary maximum (corrected to zero phase and to 1 AU from the earth and the sun) was about 10.8 magnitudes. Since the observations indicate that Eros has no significant rotational color variations, it is suggested that the light-curve amplitudes are due primarily to the asteroid's shape and to shadowing effects. Based on its colors relative to the sun, it is concluded that Eros appears to be an S-type asteroid.

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