Reference : Asteroid 532 Herculina - Lightcurves, pole orientation and a model
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/32407
Asteroid 532 Herculina - Lightcurves, pole orientation and a model
English
Taylor, R. C. [Arizona, University, Tucson, AZ]
Birch, P. V. [Perth Observatory, Bickley, Australia]
Drummond, J. [Steward Observatory, Tucson, AZ]
Pospieszalska-Surdej, Anna [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Surdej, Jean mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Feb-1987
Icarus
Academic Press
69
354-369
Yes (verified by ORBi)
International
0019-1035
San Diego
CA
[en] LIGHT CURVE ; PLANETARY ROTATION ; POLES ; ASTRONOMICAL MODELS ; ELECTROPHOTOMETRY ; HERCULINA ; LIGHTCURVES ; MODELS ; PHOTOELECTRIC METHODS ; PERIOD ; ROTATION ; MAGNITUDE ; COLOR ; OPTICAL PROPERTIES ; ASTROMETRY ; AMPLITUDE ; S ASTEROIDS ; PROCEDURE ; ANALYSIS ; DIAGRAMS ; POLAR REGIONS ; ASTEROIDS ; ASTEROIDS
[en] Photoelectric lightcurves of 532 Herculina in 1984 show two maxima and two minima with a synodic rotation period of 0.39185±0.00002 day (1sigma). During some other oppositions the Herculina lightcurve has only one maximum and one minimum over that same rotation period. The absolute magnitude in V is 6.13±0.02 mag, the phase coefficient in V is 0.037±0.002, and the mean colors are B-V = +0.86±0.04 and U-B = +0.43±0.02. The authors applied photometric astrometry and the results indicate a sidereal period of 0.3918711±0.0000001 day with retrograde rotation for a north pole at 276° long and +1° lat. The uncertainty of the pole is ±1°. A model of Herculina is presented that generates lightcurves consistent with both the observed amplitudes and the timings of extrema over precisely 28,630 sidereal rotations during 30 years.
Researchers ; Professionals
http://hdl.handle.net/2268/32407
10.1016/0019-1035(87)90111-4
http://esoads.eso.org/abs/1987Icar...69..354T

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