J/A+A/427/371 Galilean satellites ephemerides (Lainey+, 2004)
New accurate ephemerides for the Galilean satellites of Jupiter.
II. Fitting the observations.
Lainey V., Arlot J.E., Vienne A
<Astron. Astrophys. 427, 371 (2004)>
=2004A&A...427..371L 2004A&A...427..371L
ADC_Keywords: Ephemerides ; Planets
Keywords: astrometry - planets and satellites: individual: Io -
planets and satellites: individual: Europa -
planets and satellites individual: Ganymede -
planets and satellites: individual: Callisto - ephemerides
Abstract:
We present a new model of the four Galilean satellites Io, Europa,
Ganymede and Callisto, able to deliver accurate ephemerides over a
very long time span (several centuries). In the first paper (Lainey et
al., 2004A&A...420.1171L 2004A&A...420.1171L) we gave the equations of the dynamical
model. Here we present the fit of this model to the observations,
covering more than one century starting from 1891. Our ephemerides,
based on this first fit called L1, are available on the web page of
the IMCCE at the URL http://www.imcce.fr/ephemeride_eng.html .
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table4.dat 83 32 Mean and standard deviation on right ascension
and declination for each satellite
table5.dat 77 33 Linear correction for positions
table6.dat 77 33 Linear correction for velocities
table7.dat 59 33 Linear correction for the parameters
tables.tex 92 303 LaTeX version of the tables
--------------------------------------------------------------------------------
See also:
http://www.imcce.fr/ephemeride_eng.html : Ephemerides server Home Page
J/A+A/314/312 : Galilean satellites mutual events in 1997 (Arlot 1996)
J/A+A/383/719 : Galilean Satellites mutual events 2002-2003 (Arlot, 2002)
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 35 A35 --- Obs Observations
37- 44 F8.5 arcsec nuRA Mean deviation on right ascension (να)
46- 52 F7.5 arcsec sRA Standard deviation on right ascension
(σα)
54- 61 F8.5 arcsec nuDE Mean deviation on declination (νδ)
63- 69 F7.5 arcsec sDE Standard deviation on declination
(σδ)
71- 74 I4 --- Nobs Number of observations used by the satellite
76- 83 A8 --- Sat Satellite name
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- Param Parameter
7- 11 F5.2 --- x1 Linear correction for x1 parameter
13- 17 F5.2 --- y1 Linear correction for y1 parameter
19- 23 F5.2 --- z1 Linear correction for z1 parameter
25- 29 F5.2 --- x2 Linear correction for x2 parameter
31- 35 F5.2 --- y2 Linear correction for y2 parameter
37- 41 F5.2 --- z2 Linear correction for z2 parameter
43- 47 F5.2 --- x3 Linear correction for x3 parameter
49- 53 F5.2 --- y3 Linear correction for y3 parameter
55- 59 F5.2 --- z3 Linear correction for z3 parameter
61- 65 F5.2 --- x4 Linear correction for x4 parameter
67- 71 F5.2 --- y4 Linear correction for y4 parameter
73- 77 F5.2 --- z4 Linear correction for z4 parameter
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- Param Parameter
7- 11 F5.2 --- vx1 Linear correction for vx1 parameter
13- 17 F5.2 --- vy1 Linear correction for vy1 parameter
19- 23 F5.2 --- vz1 Linear correction for vz1 parameter
25- 29 F5.2 --- vx2 Linear correction for vx2 parameter
31- 35 F5.2 --- vy2 Linear correction for vy2 parameter
37- 41 F5.2 --- vz2 Linear correction for vz2 parameter
43- 47 F5.2 --- vx3 Linear correction for vx3 parameter
49- 53 F5.2 --- vy3 Linear correction for vy3 parameter
55- 59 F5.2 --- vz3 Linear correction for vz3 parameter
61- 65 F5.2 --- vx4 Linear correction for vx4 parameter
67- 71 F5.2 --- vy4 Linear correction for vy4 parameter
73- 77 F5.2 --- vz4 Linear correction for vz4 parameter
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table7.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- Param Parameter
7- 11 F5.2 --- J2 Linear correction for J2 parameter
13- 17 F5.2 --- J4 Linear correction for J4 parameter
19- 23 F5.2 --- m0 Linear correction for m0 parameter
25- 29 F5.2 --- m1 Linear correction for m1 parameter
31- 35 F5.2 --- m2 Linear correction for m2 parameter
37- 41 F5.2 --- m3 Linear correction for m3 parameter
43- 47 F5.2 --- m4 Linear correction for m4 parameter
49- 53 F5.2 --- psi Linear correction for ψ parameter
55- 59 F5.2 --- I Linear correction for I parameter
--------------------------------------------------------------------------------
Acknowledgements: Valery Lainey, Valery.LAINEY(at)oma.be
(End) Patricia Vannier [CDS] 26-Oct-2004