UBV photometry of the minor planets 86 Semele, 521 Brixia, 53 Kalypso and 113 Amalthea

Details UBV photometry of the minor planets 86 Semele, 521 Brixia, 53 Kalypso and 113 Amalthea UBV photometry of the minor planets 86 Semele, 521 Brixia, 53 Kalypso and 113 Amalthea

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26as...52..203s&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 52, May 1983, p. 203-211.

Astronomy and Astrophysics

Astronomy

2

Asteroids, Astronomical Photometry, Light Curve, Planetary Rotation, Ubv Spectra, Electrophotometry, Asteroids, Photometry, Ultraviolet, Wavelengths, 86 Semele, 521 Brixia, 53 Kalypso, 113 Amalthea, Lightcurve, Amplitude, Rotation, Periods, Color, Comparisons, Astronomy

Scientific paper

The asteroids were observed photometrically during the 1980 and 1981 oppositions, respectively. The V lightcurve of 86 Semele displays two asymmetric maxima and minima with a total amplitude ΔV = 0.18 mag. Its synodic rotation period is Ps = 16h38m02" ± 16" and the color indices B-V = 0.690 ± 0.011 and U-B = 0.320 ± 0.015 mag. 521 Brixia is a slow rotator (Ps > 24h) showing light variations greater than ΔV ≅ 0.09 mag and with color indices B-V = 0.714 ± 0.008 and U-B = 0.337 ± 0.011 mag. 53 Kalypso rotates with a period Ps = 26h33m ± 4m with a total light amplitude ΔV > 0.10 mag and color indices B-V = 0.692 ± 0.015 and U-B = 0.341 ± 0.022 mag. The lightcurve of 113 Amalthea shows large amplitude variations (ΔV > 0.26 mag) with a broad minimum and the rotation period is greater than 12h with color indices B-V = 0.888 ± 0.012 and U-B = 0.487 ± 0.019 mag.

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