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2 Description of photometric observations

Below we give the full names of observatories where observations were made. The abbreviations of the observatory names, which we use hereafter for the sake of brevity, are printed in boldface.

Table 1 below lists the observers who took part in observations at each observatory and a brief description of the equipment used. A separate column gives the adopted codes used of actual observers. These codes will then be used to identify the observatory, observers, and equipment for each observation. The observations were made with different instruments at some observatories and therefore the latter are listed twice in Table 1.


Table 1: List of observers and parameters of the equipment



Observatory above the Instrument Detector Observers

  sea level, m      


Alma-Ata 1450 Zeiss-600, D = 60 cm, F = 12381 mm CCD ST-6 Tejfel V.G.


Voronezh 195 Refractor, D = 6 cm, F = 300 mm Visual Berejnoi A.A.


Voronezh 195 Reflector, D =10 cm, F = 800 mm Visual Berejnoi A.A.,

        Raskhozhev V.N.


Dushak 1000 Reflector, D = 80 cm, F = 11000 mm Photometer Dorokhova T.N.,

        Dorokhov N.I.,

        Mukhamednazarov S.


Kiev 188 AZT-2, D = 70 cm, F = 10500 mm Analog TV Delets A.,

Kucherov V.,

      photometer Ledovskaya I.


Kourovka 200 AZT-3, D = 45 cm, F = 10000 mm Photometer Gorda S.Yu.


Nauchny 550 Zeiss-600, D = 60 cm, F = 7500 mm Photometer Irsmambetova T.R.


Nauchny 550 Refractor, D = 40 cm, F = 1600 mm CCD ST-8 Esipov V.F.


Pulkovo 75 Refractor, D = 60 cm, F = 10400 mm CCD ST-6 Kisselev A.A.,

        Izmailov I.S.


Remark in Table 1: One of the photoelectric observations at the observatory in Nauchnyi settlement was made with the participation of S.Yu. Shugarov, observer from the Sternberg Astronomical Institute.

The observations at the observatories Dushak, Kiev, Kourovka, Nauchny (Code t) were made with an electrophotometer in a photon-counting mode.

We observed mutual phenomena of the four Galilean satellites. Table 2 lists some of the parameters of the satellites and the elements of their orbits at the time close to the Jupiter opposition.


Table 2: Some of the satellite parameters for August 9, 1997


Magnitude Radius, km Apparent radius, '' Apparent radius of the orbit, '' Orbital period, days


4.88 1816 0.618 143 1.769138


5.15 1563 0.532 228 3.551181


4.47 2638 0.898 364 7.154553


5.51 2410 0.821 641 16.68902


The season of mutual phenomena of Jovian satellites at observatories in Russia, Ukraine, and Kazakhstan started on March 12, 1997 and ended on January 26, 1998.

During the season of the mutual occultations and eclipses the Jupiter declination varied from -14 to -18 degrees.

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