Contents.
planet: 6 - Saturn
satellites: S1-Mimas : 55,
S2-Enceladus :112,
S3-Tethys :118,
S4-Dione :135,
S5-Rhea :137,
S7-Hyperion :136,
S8-Iapetus :120
total number: 813
type: relative
dates: 1982-1988
observatory: 874 - Itajuba (Laboratorio Nacional de Astrofisica)
Reference.
Veiga C.H., Vieira Martins R. (1999)
Photographic positions for the first eight satellites
of Saturn.
Astron. Astrophys. Suppl. Ser. V. 139. P. 305.
1999A&AS__139__305V
Informations.
relative to: S6-Titan : 813
reference frame: astrometric
centre of frame: geocentre
epoch of equinox: J2000
time scale: UTC
reduction: no information
coordinates: relatives
diff. refraction: no information
receptor: photographic
telescope: no information
observers: Veiga C.H., Vieira Martins R.
data included in standard data file: no
Comments.
Individual files can be fetched directly from:
ftp://cdsarc.u-strasbg.fr/cats/J/A+AS/139/305
The catalogue can be queried from:
http://vizier.u-strasbg.fr/cgi-bin/VizieR?-source=J/A+AS/139/305
evaluation: The differences O-C(X), O-C(Y) are published
in the article. For these values one have:
X Y
M. (mean) -0.038" -0.078"
R.M.S. (root mean square) 0.389" 0.366"
The differences O-C(X)e, O-C(Y)e were also
calculated by N.Emelianov with the theory by
Harper & Taylor.
With these O-C one have
X Y
M. (mean) -0.070" -0.084"
R.M.S. (root mean square) 0.519" 0.392"
Format.
Byte-by-byte Description of file: *dat.txt
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Bytes Format Units Label Explanations
------------------------------------------------------------------------------
1- 3 I3 --- Opp Opposition year code number (105=1989, 111=1988)
5- 8 I4 yr Obs.Y Year of observation
10- 11 I2 --- Obs.M Month of observation
13- 21 F9.6 d Obs.D UTC date of observation (DD.dddddd)
23- 26 F4.1 s ET-UTC ET-UTC to the nearest tenth of second
28- 30 I3 ---- Code [874] Observatory code
(874: Laboratorio Nacional de Astrofisica)
32- 33 A2 --- Ref [**] Reference code (no entries)
35 I1 --- ObsType [2] Observation type ({Delta}RA, {Delta}DE)
37- 38 I2 --- Sat Subject satellite, reference satellite (1)
40 I1 --- Obs1 [0/1] Presence flag for first observation
of pair (2)
41 I1 --- Obs2 [0/1] Presence flag for second observation
of pair (2)
43- 53 F11.6 s DRA Position {Delta}RA
55- 65 F11.6 arcsec DDE Position {Delta}DE
67 I1 --- Sys [2] Reference system (J2000.0)
69 I1 --- Frame [1] Reference frame (geocentric)
71- 75 F5.2 arcsec Res1 (O-C) {Delta}RAcosDE residual for first
observation of pair
77- 81 F5.2 arcsec Res2 (O-C) {Delta}RAcosDE residual for second
observation of pair
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Note (1): Satellite numbers used in the catalogue conform to the conventional
IAU numbering system. 0 is used to denote the planet.
1: Mimas; 2:Enceladus; 3: Tethys; 4: Dione; 5: Rhea; 6: Titan;
7: Hyperion; 8: Iapetus; 9: Phoebe
Note (2): 0: observation absent
1: observation present