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J/A+A/400/1095  1995-1999 CCD observation of Saturnian satellite (Veiga+, 2003)

CCD astrometric observations of Saturnian satellites. Veiga C.H., Vieira Martins R., Vienne A., Thuillot W., Arlot J.-E. <Astron. Astrophys. 400, 1095 (2003)> =2003A&A...400.1095V
ADC_Keywords: Planets ; Positional data Keywords: planets and satellites: individual: Saturn astrometry Abstract: Astrometric positions of the first eight largest Saturnian satellites and the Lagrangian satellites Helene, Telesto and Calypso are presented from 493 CCD frames taken at the oppositions in 1995 through 1999. The images were obtained over 27 nights. Observed positions are compared with the calculated ones from Vienne and Duriez (1995A&A...297..588V) TASS 1.7 for the large satellites and from JPL positions for the Lagrangian satellites. The rms is about 0.12" for the former but 0.20" for Iapetus and 0.28" for Hyperion. For the Lagrangian satellites it is about 0.21" for Helene, 2.02" for Telesto and 0.60" for Calypso. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 123 3289 List of observed positions of the Saturnian satellites
See also: J/A+A/380/727 : 1995 Saturnian satellite observations (Vienne+, 2001) J/A+AS/139/47 : 1995 Saturnian satellites mutual events (Emelianov+, 1999) J/A+A/383/296 : Saturnian Satellites positions (1996-2000) (Peng+, 2002) J/A+AS/139/305 : Position of Saturn's satellites (1982-1988) (Veiga+, 1999) J/A+AS/143/405 : Astrometric observations of Helene (Veiga+, 2000) Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Opp Opposition year code number (1=1874 to 122=1999) 5- 8 I4 yr Obs.Y Year of Observation 10- 11 I2 --- Obs.M Month of observation 13- 22 F10.7 d Obs.D UTC date of observation (DD.ddddddd) 24- 29 F6.3 s TT-UTC TT-UTC to the nearest tenth of second 31- 33 I3 --- Obs [874] Observatory code (Laboratorio Nacional de Astrofisica, Brazil) 35- 37 I3 --- Ref [303] Reference code catalog (we have chosen 303 for the present observations) 39 I1 --- ObsType [0/1] Observation type 0=RA, DE; 1=ΔRA*cosDE, ΔDE (1) 41- 43 A3 --- Objs Subject satellite, reference satellite (2) 45 I1 --- f_Obs1 [1] Flag of presence of the first coordinate 46 I1 --- f_Obs2 [1] Flag of presence of the second coordinate 49- 60 F12.7 --- Obs1 First coordinate (3) 63- 74 F12.7 --- Obs2 Second coordinate (3) 76 I1 --- Sys [0/2] Reference system (4) 78 I1 --- Frame [0/2] Reference frame (5) 80- 86 F7.3 arcsec O-C1 ?=999.999 First residual of observations computed with TASS1.7 (6) 88- 94 F7.3 arcsec O-C2 ?=999.999 Second residual of observations computed with TASS1.7 (6) 97 I1 --- Nsat Number of the satellite used as reference in the computation of O-C (2) 100 I1 --- n_NSerie [0/1] 0 for no meaning and 1 when the frame was not used in the computation of the scale and the direction of the series 102-103 I2 --- NSerie Number of the series, the scale and orientation are the same for all observations of one series 105-113 F9.3 pix Xpos ?=99999.999 Original X coordinate 115-123 F9.3 pix Ypos ?=99999.999 Original Y coordinate
Note (1): Observation type: 0: RA, DE 1: ΔRA*cosDE, ΔDE 2: ΔRA, ΔDE 3: position angle, separation Note (2): Satellite numbers: 0 for Saturn, 1 to 8 for S1 to S8, 12 for Helene, 13 for Telesto, 14 for Calypso, C for the center of the plate which is not a physical object. Note (3): Obs1 and Obs2 are in arcsec but in degree when Sat = C* When Obstype=0, Obs1=RA, Obs2=DE When ObsType=1, Obs1=ΔRA*cosDE,Obs2=ΔDE Note (4): Reference system code: 0: mean equator and equinox B1950, 1: true equator and equinox of date of observation, 2: mean equator and equinox of J2000 Note (5): Reference frame code: 0: topocentric, 1: geocentric, 2: heliocentric Note (6): Residuals of observations: 999.999 when the residuals are not computed 888.888 when the residuals are greater than 100 in absolute value
Acknowledgements: Carlos Henrique Veiga,
(End) Patricia Bauer [CDS] 17-Mar-2003
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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