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Description of the Galilean satellites of Jupiter ephemerides.


Each line contains ephemerides for a single moment of time. The interval of time
between the moments makes 6 hours.

In first five columns the moment of time is placed (year, month, day, hour, modified
Julian day). The following two columns contain the information about the apparent
distance between Moon and Jupiter, and the fraction of the lunar disk that is
illuminated by the Sun (100% is a Full Moon).

Following column (beginning from the 8th) corresponds to a pair "star- satellite".
One column may contain data for different pairs "star- satellite" if their close
encounters do no coincide in time. Numbers of satellites and stars, to which
apparent angular distances relate, are given in the first line of the column
segment. The mutual angular distances between star and satellite are given in
arcminutes.

Byte-by-byte Description of files: star-J1.txt and star-J2.txt
-------------------------------------------------------------------------------------

Bytes Format Units Label Explanations


1- 4 I4 --- YYYY Year of the date

6- 7 I2 --- MM Month of the date

9- 10 I2 d DD Day of the date

13- 14 I2 h h Hour of the day

18- 24 F7,2 d JD* Julian day of the date, JD*=JD-2450000.5

28- 31 F4.1 degrees M-J Apparent distance between Moon and Jupiter

36- 39 F4.1 % Moon Illumination of the Moon, 100% is a full Moon

44- 47 F3.1 arcmin D.D See Note (1)
51- 54 F3.1 arcmin D.D See Note (1)
58- 61 F3.1 arcmin D.D See Note (1)
65- 68 F3.1 arcmin D.D See Note (1)
71- 74 F3.1 arcmin D.D See Note (1)
78- 81 F3.1 arcmin D.D See Note (1)
85- 88 F3.1 arcmin D.D See Note (1)
92- 95 F3.1 arcmin D.D See Note (1)
99-102 F3.1 arcmin D.D See Note (1)

Note (1):

*: No data

N1-N2: N1 - number of star, N2 - number of satellite
D.D : The value of the apparent distance between the star and satellite in arcmin