Contents.
planet: 5 - Jupiter
satellites: J1 - Io : 9,
J2 - Europa : 2,
J3 - Ganymede : 13,
J4 - Callisto : 2
total number: 26
type: relative
dates: 1985-1985
observatory: see observatories coordinates below.
Reference.
Emelyanov N. V., Arlot J.-E.
Astrometric results PHEMU-1985 and PHEMU-1991.
Planetary and Space Science.
2020. V. 187. P. 104946.
2020P&SS__18704946E
Informations.
relative to: reference body is an occulted or eclipsed satellite:
J1 - Io : 5,
J2 - Europa : 15,
J3 - Ganymede : 5,
J4 - Callisto : 1
reference frame: astrometric
centre of frame: topocenter for mutual occultation
or heliocenter for mutual eclipse
epoch of equinox: J2000
time scale: UTC
reduction: from mutual occultations and eclipses
coordinates: Position angle (topocentric for mutual occultation
or heliocentric for mutual eclipse)
diff. refraction: no information
receptor: photometric (see the relevant article)
telescope: See in the publication
observers: See in the publication
data included in standard data file : no
Comments.
Data are deduced from the photometric observations
of the mutual occultations and eclipses made
during the international campaign in 1985.
The description of these astrometric data
is given in the relevant article (see Reference).
The coordinates of the observatories are given below.
The second group of the data is presented in this item.
The "O-C' are given with respect of the theory by V.Lainey
(Lainey, V., Arlot, J. E., Karatekin, O., van Hoolst, T. 2009.
Nature. V. 459. P 957.)
This is the second group of the data
The first one see in the item jg0050 of the NSDC.
Observatory code with geographic coordinates.
Conventional Longitude Latitude
Code name deg ' " deg ' "
----------------------------------------------
FND FND E 2 8 60 N 48 52 0
BRS BRESIL W 45 0 0 S 23 39 0
PIC PIC_DU_MIDI E 0 55 24 N 42 56 12
ESO ESO W 70 43 48 S 29 15 24
MEU MEUDON E 2 13 53 N 48 48 18
CAT CATANE E 15 5 9 N 37 30 13
FIG FIGER E 2 20 15 N 48 50 0
GRE GRENADE W 0 21 33 N 37 11 13
TER TERAMO E 1 22 24 N 42 39 27
OHP OHP E 5 42 60 N 43 55 46
JUN JUNGFRAU E 7 58 60 N 46 32 53
SAM SAMPSOR E 1 49 20 N 42 22 12
GES GEOS-RMS E 5 27 0 N 43 32 0
GRA GRASSE E 6 55 30 N 43 44 56
TOU TOULOUSE E 1 26 0 N 43 37 0
BOR BORDEAUX W 0 31 39 N 44 50 7
SEV SEVRE E 2 20 15 N 48 50 0
MOL MOLLET E 2 12 30 N 41 32 22
ZOE ZOETEMEER E 4 18 0 N 52 4 0
AIX AIX-EN-P E 5 27 0 N 43 32 0
BAS BARCELONE E 2 25 54 N 41 32 18
CAL CALA_-_PIC E 0 55 24 N 42 56 12
GED GEOS-FND E 2 9 0 N 48 52 0
COV COVO E 9 46 15 N 45 30 0
BER BERLIN-T50 E 13 28 36 N 52 29 15
GEA GEA-RMS E 5 27 0 N 43 32 0
BOU BOURBON-LANCY E 3 46 0 N 46 37 0
CAS CASES_NOVES E 1 35 21 N 41 27 49
PAR PARIS E 2 20 15 N 48 50 0
GER GEOS-FGR E 0 55 24 N 42 56 12
CHI CHIRAN E 6 19 0 N 43 52 6
STA St-AUBIN_MAMA E 0 33 0 N 48 32 0
LAP LA_PRIMAUDIERE W 1 30 0 N 48 6 0
MSS MASSA E 10 8 8 N 44 1 4
GEG GEOS-LCG E 2 20 15 N 48 50 0
GEO GEOS E 10 8 8 N 44 1 4
CHR CHIRAN-MANFROID E 6 19 0 N 43 52 6
REM REMIS E 5 27 0 N 43 32 0
Format.
1. Observatory code (see the table in the relevant article).
2. The type of the phenomenon (eclipse or occultation) including the
satellite numbers. The type of phenomenon is coded as n_a o n_p
or n_a e n_p for a mutual occultation or eclipse, respectively.
Here $n_a$ is the number of the occulting or eclipsing satellite
and $n_p$ is the number of the occulted or eclipsed satellite.
3. Year of observation
4. Month of observation
5. Day of observation
6. Hour of the astrometric data (UTC)
7. Minute of the astrometric data (UTC)
8. Seconde of the astrometric data with decimals (UTC)
9. Position angle A in degrees (topocentric for mutual occultation
or heliocentric for mutual eclipse)
10. Precision of apparent position along the apparent relative trajectory
of the satellite as obtained with the least-square method, in arcseconds
11. O-C along the apparent relative trajectory, in arcseconds.
12. Flag R assigned showing the reason why only one coordinate was determined:
R=0 - there is no doubt about the results;
R=1 - the flux zero level in the photometry is not correctly excluded;
you can use the position angle as an astrometric result
instead the values $X, Y$.
R=2 - the flux drop is small and noise signal is big in the photometry,
astrometric results are doubtful.
R=3 - there is a significant error in the photometric data,
the results are not suitable.
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Observ. Year Position sigma
code month UTC angle A O-C R
Type date h m s deg arcsec arcsec
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