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Photoelectric lightcurves of asteroids 42 Isis, 45 Eugenia, 56 Melete, 103 Hera, 532 Herculina, and 558 Carmen

1979; Elsevier BV; Volume: 38; Issue: 1 Linguagem: Inglês

10.1016/0019-1035(79)90089-7

1090-2643

Alan W. Harris, James W. Young,

Planetary Science and Exploration

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.