J/A+A/544/A29 2009 Saturnian satellites mutual events (Arlot+, 2012)
Astrometric results of observations of mutual occultations and eclipses of the
Saturnian satellites in 2009.
Arlot J.-E., Emelyanov N.V., Lainey V., Andreev M., Assafin M.,
Braga-Ribas F., Camargo J.I.B., Casas R., Christou A., Colas F.,
Da Silva Neto D.N., Dechambre O., Dias-Oliveira A., Dourneau G.,
Farmakopoulos A., Gault D., George T., Gorshanov D.L., Herald D.,
Kozlov V., Kurenya A., Le Campion J.F., Lecacheux J., Loader B.,
Massalle A., Mc Brien M., Murphy A., Parakhin N., Roman-Lopes A.,
Schnabel C., Sergeev A., Tsamis V., Valdes Sada P., Vieira-Martins R.,
Zhang X.
<Astron. Astrophys. 544, A29 (2012)>
=2012A&A...544A..29A 2012A&A...544A..29A
ADC_Keywords: Planets ; Photometry ; Positional data ; Occultations
Keywords: planets and satellites: dynamical evolution and stability -
occultations - catalogs - astrometry
Abstract:
The photometry of mutual occultations and eclipses of natural
planetary satellites can be used to infer very accurate astrometric
data. This can be achieved by processing the light curves of the
satellites observed during international campaigns of photometric
observations of these mutual events.
This work focuses on processing the complete database of photometric
observations of the mutual occultations and eclipses of the Saturnian
satellites made during the international campaign in 2009. The final
goal is to derive new accurate astrometric data.
Description:
We develop an accurate photometric model of mutual event observations
of sufficiently high accuracy. Our original method is applied to
derive astrometric data from photometric observations of the mutual
occultations and eclipses of the Saturnian satellites.
We process the 26 light curves obtained during the international
campaign of photometric observations of the Saturnian satellites in
2009.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 60 32 List of observations
table3.dat 85 19 Sites of observation for the PHESAT09 campaign
obs/* . 32 Normalized fluxes of mutual phenomena observations
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See also:
J/AJ/103/983 : Stellar occultation candidates of Saturn (Bosh+, 1992)
J/A+AS/121/65 : 1990-1994 Saturn's satellites astrometry (Harper+ 1997)
J/A+AS/136/257 : Saturn's satellites in 1995/97 (Harper+ 1999)
J/A+AS/139/47 : 1995 Saturnian satellites mutual events (Emelianov+, 1999)
J/A+AS/139/305 : Position of Saturn's satellites (1982-1988) (Veiga+, 1999)
J/A+A/383/1054 : Astrometry of Pluto and Saturn in 1995-2001 (Rapaport+, 2002)
J/A+A/422/377 : 1997-2000 Saturn's satellites astrometry (Qiao+, 2004)
J/A+A/485/293 : Events of Saturn satellites during 2009 equinox (Arlot+, 2008)
J/A+A/493/1183 : Saturn major satellites obs. (1874-2007) (Desmars+, 2009)
J/AJ/136/2214 : Positions of Saturn and its satellites in 2002-06 (Peng+ 2008)
Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 10 A10 "YYYY/MM/DD" Date Observation date
12- 14 A3 --- Event Type of event (1)
16- 18 A3 --- Obs Observatory code, in table3.dat file
20- 24 A5 --- Rec CCD receptors identification
26- 33 A8 --- Filt Filter (2)
35- 39 A5 --- Sat Satellites for which the flux is recorded
41- 60 A20 --- FileName Name of the file in the subdirectory obs
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Note (1): Satellite numbers:
1 = Minas, 2= Enceladus , 3 = Thetys, 4 = Dione, 5 = Rhea
Note (2): L means large, i.e. R+V+B and C means clear, i.e. no filter.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Obs Observatoty code
5- 46 A42 --- Site Site
48- 51 A4 --- Tel Telescope designation
53- 57 A5 --- Rec CCD receptors identification (1)
59- 61 I3 deg LONd Longitude (degrees)
63- 64 I2 arcmin LONm Longitude (arcmin)
66- 67 I2 arcsec LONs Longitude (arcsec)
69 A1 --- LON- [EW] Longitude orientation
71- 72 I2 deg LATd Latitude (degrees)
74- 75 I2 arcmin LATm Latitude (arcmin)
77- 78 I2 arcsec LATs Latitude (arcsec)
80 A1 --- LAT- [NS] Latitude (orientation)
82- 85 I4 m El Elevation
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Note (1): CCD receptors as follows:
CCD0 = camera Thomson THX 7863 384x288
CCD1 = camera SBIG ST-8
CCD2 = Video Watec 120N at 8 framestack
CCD3 = Atik 16HR
CCD4 = Video Watec 120N 25 frames/s
CCD5 = SBIG STL1301-E
CCD6 = SBIG ST8-XME
CCD7 = TV camera PAL
CCD8 = TV camera Mintron 12V6HC-EX
CCD9 = TV camera Watec 120N at 16 framestack
CCD10 = CCD SBIG STL-1001E
CCD11 = CCD PixelVision Viena 1024x1024
CCD12 = CCD DW436 2048x2048
CCD13 = CCD S800 with methane filter
CCD14 = CCD 301 with I filter
CCD15 = Andicam with Y filter (IR)
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Byte-by-byte Description of file: obs/*
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Bytes Format Units Label Explanations
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1- 12 F12.6 d MJD Observation date, MJD (TT)
15- 24 F10.5 min Time Observation time, in minutes to 0h (TT)
26- 34 F9.6 --- Flux Normalized measured flux
37- 44 F8.6 --- FluxM [0/1] Model flux, adjusted and normalized (1)
48- 54 F7.4 arcsec Dist Apparent topocentric (heliocentric) distance
between the satellites
56- 63 F8.4 deg PA Position angle of occulting or eclipsing
satellite to occulted or eclipsed satellite
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Note (1): The level flux =1 is adjusted on each points of the curve.
For 6 observations of insufficient quality, the model flux value is
'any' and the flux level =1 in not adjusted.
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Acknowledgements:
Jean-Eudes Arlot, Jean-Eudes.Arlot(at)imcce.fr
(End) Patricia Vannier [CDS] 19-Jul-2012