Article (Scientific journals)
Photoelectric lightcurves and rotation period of the minor planet 201 Penelope
Surdej, Jean; Louis, B.; Cramer, N. et al.
1983In Astronomy and Astrophysics. Supplement Series, 54, p. 371-378
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Keywords :
ASTRONOMICAL PHOTOMETRY; ELECTROPHOTOMETRY; LIGHT CURVE; PLANETARY ROTATION; COLOR; MAGNITUDE; PERIODIC VARIATIONS; TIME MEASUREMENT; UBV SPECTRA; ASTEROIDS
Abstract :
[en] Results of photoelectric observations of the asteroid 201 Penelope carried out at the European Southern Observatory and Perth Observatory during the 1980 opposition of the asteroid between October 6 and November 7 are presented. Observations were made in the standard UBV and Geneva systems at ESO, and in V-prime at Perth. Examination of composite light curves shows the presence of two distinct maxima and two distinct minima, with a total amplitude of the V light curve of 0.52 magnitudes. A mean synodic rotation period of 3 h, 44 min, 51.6 + or - 7.4 sec is derived. Using a mean phase coefficient beta[SUB]V[/SUB] = 0.037 mag/deg, a primary V (1,0) maximum of 8.51 + or - 0.01 magnitudes is obtained. Color indices are measured as B-V = 0.70 + or - 0.01 and U-B = 0.23 + or - 0.02 magnitudes, and previously reported color variations (Surdej and Cramer, 1980) are attributed to a failure in the reduction procedure.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Surdej, Jean  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Louis, B.;  Liege, Universite, Cointe-Ougree, Belgium
Cramer, N.;  Geneve, Observatoire, Sauverny, Switzerland
Rufener, F.;  Geneve, Observatoire, Sauverny, Switzerland
Waelkens, C.;  Geneve, Observatoire, Sauverny, Switzerland
Barbier, R.;  European Southern Observatory, Santiago, Chile
Birch, P. V.;  Perth Observatory, Bickley, Australia
Language :
English
Title :
Photoelectric lightcurves and rotation period of the minor planet 201 Penelope
Publication date :
November 1983
Journal title :
Astronomy and Astrophysics. Supplement Series
ISSN :
0365-0138
eISSN :
1286-4846
Publisher :
EDP Sciences, Les Ulis, France
Volume :
54
Pages :
371-378
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 August 2009

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