J/A+A/507/495 Light curves of Datura and 2003 CL5 asteroids (Vokrouhlicky+ 2009)
Datura family: The 2009 update.
Vokrouhlicky D., Durech J., Michalowski T., Krugly Y.N., Gaftonyuk N.M.,
Krysczynska A., Colas F., Lecacheux J., Molotov I., Slyusarev I.,
Polinska M., Nesvorny D., Beshore E.
<Astron. Astrophys. 507, 495 (2009)>
=2009A&A...507..495V 2009A&A...507..495V
ADC_Keywords: Minor planets ; Photometry, CCD
Keywords: minor planets, asteroids - techniques: photometric
Abstract:
Research of asteroid families has been recently refreshed by the
discovery of very young ones. These families are of great interest
because they represent the product of their parent body fragmentation
before orbital and physical evolutionary processes can change them. A
cluster of seven objects around the largest body (1270) Datura is of
particular interest because it has enough known members and resides in
the inner part of the main asteroid belt, facilitating observations.
We carried out photometric observations of the two largest members of
the Datura family - asteroids (1270) Datura and (90265) 2003 CL5 -
with the goal of inferring their physical parameters. We also used
numerous astrometric observations of Datura-family members in the past
few years to revisit the age of this cluster.
Description:
The files contain asteroid brightness and geometry for corresponding
epochs. Individual lightcurves within a file are separated by an empty
line, all lightcurves are relative.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
objects.dat 26 2 Asteroid list
lc1270.dat 85 1088 Lightcurves of asteroid (1270) Datura
lc90265.dat 85 205 Lightcurves of asteroid (90265) 2003 CL5
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See also:
B/astorb : Orbits of Minor Planets (Bowell+ 2009)
J/other/P+SS/53.925 : CCD photometry of 23 minor planets (Szekely+, 2005)
J/A+A/465/331 : Asteroid brightness and geometry (Durech+, 2007)
Byte-by-byte Description of file: objects.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- Ast Asteroid number
7- 14 A8 --- Name Asteroid name
16- 26 A11 --- FileName Name of the file containing the light curve
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Byte-by-byte Description of file: lc1270.dat lc90265.dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d JD JD epoch corrected for the light-time
corresponding to the Earth-asteroid distance
18- 23 F6.4 --- br Relative brightness in intensity units,
mean brightness of each lightcurve is unity
26- 34 F9.6 AU Sx x component of the vector from the asteroid to
the Sun in J2000 ecliptic Cartesian coordinates
36- 44 F9.6 AU Sy y component of the vector from the asteroid to
the Sun in J2000 ecliptic Cartesian coordinates
46- 54 F9.6 AU SZ Z component of the vector from the asteroid to
the Sun in J2000 ecliptic Cartesian coordinates
57- 65 F9.6 AU Ex x component of the vector from the asteroid to
the Earth in J2000 ecliptic Cartesian
coordinates
67- 75 F9.6 AU Ey y component of the vector from the asteroid to
the Earth in J2000 ecliptic Cartesian
coordinates
77- 85 F9.6 AU EZ Z component of the vector from the asteroid to
the Earth in J2000 ecliptic Cartesian
coordinates
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Acknowledgements:
Josef Durech, durech(at)sirrah.troja.mff.cuni.cz
(End) Patricia Vannier [CDS] 03-Sep-2009