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J/A+A/498/313       Photometry of 3 main belt asteroids      (Marciniak+, 2009)

Photometry and models of selected main belt asteroids. VI. 160 Una, 747 Winchester, and 849 Ara. Marciniak A., Michalowski T., Hirsch R., Polinska M., Kaminski K., Kwiatkowski T., Kryszczynska A., Behrend R., Bernasconi L., Michalowski J., Starczewski S., Fagas M., Sobkowiak K. <Astron. Astrophys. 498, 313 (2009)> =2009A&A...498..313M
ADC_Keywords: Minor planets ; Photometry Keywords: techniques: photometric - minor planets: asteroids Abstract: We present a set of new photometric observations of three main belt asteroids: 160 Una, 747 Winchester, and 849 Ara. This, combined with the available data, allowed us to construct their physical models. The lightcurve inversion method was used to obtain their spins and shapes. We have resolved problems with the rotation period of 160 Una, and found it to be 11.033176±0.000011h, almost twice the value given in the literature. Description: Table aspdat.dat contains aspect data for all of the observing runs, that is: distances from the object to th Sun and to the Earth in AU, phase angles and ecliptic coordinates of a given asteroid at a given moment. The last column contains the observatory code. The files *lcs.dat contain asteroid brightness and geometry for corresponding epochs. These files were used for obtaining shape models and spin states of the asteroids. All lightcurves are relative. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file objects.dat 68 3 Asteroid fundamental parameters aspdat.dat 67 61 Aspect data of 160 Una, 747 Winchester and 849 Ara 160lcs.dat 111 933 Asteroid 160 Una individual lightcurves 747lcs.dat 111 2173 Asteroid 747 Winchester individual lightcurves 849lcs.dat 111 480 Asteroid 849 Ara individual lightcurves
See also: B/astorb : Orbits of Minor Planets (Bowell+ 2009) Byte-by-byte Description of file: objects.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Ast Asteroid number 5- 14 A10 --- Name Asteroid name 16- 19 F4.2 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: aspdat.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Ast Asteroid number 5- 14 A10 --- Name Asteroid name 16- 19 I4 yr Obs.Y Year of an observation 21- 22 I2 m Obs.M Month of an observation 24- 27 F4.1 d Obs.D Mid-time of an observation in days 30- 35 F6.4 AU r Distance from object to the Sun 37- 42 F6.4 AU delta Distance from object to the Earth 44- 48 F5.2 deg phAngle Sun-asteroid-Earth phase angle 50- 55 F6.2
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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