Photoelectric lightcurves of asteroids 42 Isis, 45 Eugenia, 56 Melete, 103 Hera, 532 Herculina,and 558 Carmen |
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Authors: | A.W. Harris J. Young |
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Affiliation: | Jet Propulsion Laboratory, Pasadena, California 91103, USA |
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Abstract: | Photoelectric observations of six asteroids are presented. The following synodic periods of rotation and amplitudes of variation are reported: 42 Isis, P = 13h.59, Δm = 0.32; 45 Eugenia, P = 5h.70, Δm = 0.30; 56 Melete, P = 13h.7 or 19h.0, Δm = 0.06; 532 Herculina, P = 9h.408, Δm = 0.15; 558 Carmen, P ≈ 10h, Δm ≈ 0.25. The asteroid 103 Hera exhibited no periodic variation in excess of about 0.03 magnitude. The period found for 532 Herculina is one half that previously reported by other observers. |
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