J/A+A/575/A52 Short-term variability of comet C/2012S1 (Santos-Sanz+, 2015)
Short-term variability of comet C/2012 S1 (ISON) at 4.8 AU from the Sun.
Santos-Sanz P., Ortiz J.L., Morales N., Duffard R., Pozuelos F., Moreno F.,
Fernandez-Valenzuela E.
<Astron. Astrophys. 575, A52 (2015)>
=2015A&A...575A..52S 2015A&A...575A..52S
ADC_Keywords: Comets ; Photometry
Keywords: comets: individual: C/2012 S1 (ISON) - methods: observational -
techniques: photometric - Oort Cloud
Abstract:
We observed comet C/2012 S1 (ISON) during six nights in February 2013
when it was at 4.8AU from the Sun. At this distance and time the
comet was not very active and it was theoretically possible to detect
photometric variations likely due to the rotation of the cometary
nucleus.
The goal of this work is to obtain differential photometry of the
comet inner coma using different aperture radii in order to derive a
possible rotational period.
Description:
This Table shown the whole time series photometry of comet ISON during
six nights in February 2013 obtained with a 4kx4k CCD at the f/3
0.77m telescope of La Hita Observatory in Spain.
The Table show: dates, R magnitudes, mR(1,1), and the geometrical
circumstances of the comet during the observing dates, such as the
phase angle (alpha), and the heliocentric (rh) and geocentric (Delta)
distances.
Comet characteristics:
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Code Name Elem q e i H1
d AU deg mag
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C/2012 S1 ISON 2456624.5 0.0124515 0.9998938 62.401456 6.11
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 44 402 Photometry results of comet C/2012 S1 (ISON)
from six nights in February 2013
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See also:
J/A+A/564/L2 : CH3OH line parameters in comets ISON & Lovejoy (Agundez+, 2014)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d JD Julian dates
15- 20 F6.3 mag Rmag R magnitude
22- 26 F5.3 mag Rcor mR(1,1), R magnitude corrected for heliocentric
and geocentric distances (not for phase angle)
28- 32 F5.3 AU rh [4.77/4.84] Heliocentric distance
34- 38 F5.3 AU Delta [4.00/4.01] Geocentric distance Δ
40- 44 F5.3 deg alpha [6.9/8.3] Phase angle α
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Acknowledgements:
Pablo Santos-Sanz, psantos(at)iaa.es
(End) Pablo Santos-Sanz [IAA-CSIC, Spain], Patricia Vannier [CDS] 12-Jan-2015