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J/A+A/529/A107      Photometry of 4 main belt asteroids      (Marciniak+, 2011)

Photometry and models of selected main-belt asteroids. VIII. Low-pole asteroids. Marciniak A., Michalowski T., Polinska M., Bartczak P., Hirsch R., Sobkowiak K., Kaminski K., Fagas M., Behrend R., Bernasconi L., Bosch J.-G., Brunetto L., Choisay F., Coloma J., Conjat M., Farroni G., Manzini F., Pallares H., Roy R., Kwiatkowski T., Kryszczynska A., Rudawska R., Starczewski S., Michalowski J., Ludick P. <Astron. Astrophys. 529, A107 (2011)> =2011A&A...529A.107M
ADC_Keywords: Minor planets ; Photometry Keywords: techniques: photometric - minor planets: asteroids Abstract: The set of more than 100 asteroids, for which spin parameters have been modelled using an amplitude, magnitude or epoch methods, showed a pronounced gap in the distribution of the asteroid spin axes. These spin axes are rarely aligned with the ecliptic plane. The number of asteroids with known spin parameters should be increased to allow for statistical investigations. We gathered extensive photometric datasets on four selected main-belt asteroids to model their spin and shape parameters using the lightcurve inversion method. Our only criterion of selection was their observability for small telescopes. Description: The files contain asteroid brightness and geometry for corresponding epochs. These files were used for obtaining shape models and spin states of the asteroids. Individual lightcurves within a file are separated by an empty line, all lightcurves are relative. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file objects.dat 68 4 Asteroid fundamental parameters 94lcs.dat 111 843 Asteroid 94 Aurora individual lightcurves 174lcs.dat 111 1215 Asteroid 174 Phaedra individual lightcurves 679lcs.dat 111 1567 Asteroid 679 Pax individual lightcurves 714lcs.dat 111 1377 Asteroid 714 Ulula individual lightcurves
See also: J/A+A/465/331 : Asteroid brightness and geometry (Durech+, 2007) J/A+A/498/313 : Photometry of 3 main belt asteroids (Marciniak+, 2009) J/A+A/508/1503 : Photometry of 3 main belt asteroids (Marciniak+, 2009) Byte-by-byte Description of file: objects.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Ast Asteroid number 5- 13 A9 --- Name Asteroid name 15- 19 F5.2 mag H Absolute magnitude H parameter (1) 21- 25 F5.1 km Diam IRAS diameter (1) 27- 35 F9.6 deg i Inclination (1) 37- 46 F10.8 --- e Eccentricity (1) 48- 57 F10.8 AU a Semimajor axis (1) 59- 68 A10 --- FileName Name of the file containing the light curve
Note (1): Data from The Asteroid Orbital Elements Database, Cat. B/astorb.
Byte-by-byte Description of file: 174lcs.dat 679lcs.dat 714lcs.dat 94lcs.dat
Bytes Format Units Label Explanations
1- 14 F14.6 d JD JD epoch corrected for the light-time corresponding to the Earth-asteroid distance 16- 27 E12.6 --- br Relative brightness in intensity units, mean brightness of each lightcurve is unity 29- 41 E13.6 AU Sx x component of the vector from the asteroid to the Sun in J2000 ecliptic Cartesian coordinates 43- 55 E13.6 AU Sy y component of the vector from the asteroid to the Sun in J2000 ecliptic Cartesian coordinates 57- 69 E13.6 AU Sz z component of the vector from the asteroid to the Sun in J2000 ecliptic Cartesian coordinates 71- 83 E13.6 AU Ex x component of the vector from the asteroid to the Earth in J2000 ecliptic Cartesian coordinates 85- 97 E13.6 AU Ey y component of the vector from the asteroid to the Earth in J2000 ecliptic Cartesian coordinates 99-111 E13.6 AU Ez z component of the vector from the asteroid to the Earth in J2000 ecliptic Cartesian coordinates
Acknowledgements: Anna Marciniak, aniab(at)lab.astro.amu.edu.pl References: Michalowski et al., Paper I 2004A&A...416..353M Michalowski et al., Paper II 2005A&A...443..329M Michalowski et al., Paper III 2006A&A...459..663M Marciniak et al., Paper IV 2007A&A...473..633M Marciniak et al., Paper V 2008A&A...478..559M Marciniak et al., Paper VI 2009A&A...498..313M, Cat. J/A+A/498/313 Marciniak et al., Paper VII 2009A&A...508.1503M, Cat. J/A+A/508/1503
(End) Patricia Vannier [CDS] 01-Mar-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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