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