Information on Jupiter's satellite events - November 4/5, 2000

  • Info by Jan Manek;   issued 03 Nov 2000 14:00:00 +0100 (CET)

  • Jan Manek's info

                            IOTA/IOTA-ES occultation info for
          events concerning Jupiter's satellite events on November 4/5, 2000
    
    
    Summary 

    In the night of November 4/5, 2000 a 9.8 mag star TYC HIP 20994 = PPM 93561 = SAO 76633 will be occulted by planet Jupiter for observers in Europe, Africa, NE part of South America and NE North America. Edwin Goffin's nominal prediction shows the situation. The event itself is not very favourable as the star is rather faint compared to to Jupiter.

    However during check of this event I have identified 5 new events for the target star, when it will be occulted by 3 of his tiny moons. These events are listed below. Namely the two Metis events are rather favourable concerning their path location crossing populated areas, but duration of these events is only around 1 second (!!), so video recording is highly recommended.

    Occultation by Thebe (J-XIV)
    This event takes place in Indian Ocean south of South Africa between 23:18:30 UT and 23:20:45 UT on November 4, 2000. South Africa observers may give a try. Shadow in path is shown for every 10 seconds. Duration of event ~3 second.
    Position of star wrt. Jupiter at the moment of occultation is shown here. In the picture is also Ganymedes at lower right and Callisto at lower left.

    Occultation by Metis (J-XVI)
    This event takes place in Mongolia around 23:35:30 UT, Russia around 23:36 UT, Belarus, Poland around 23:37:30 UT and north Germany, Belguim and north France around 23:38 UT on November 4, 2000. Shadow in path is shown for every 10 seconds. Duration of event ~1 second.
    Position of star wrt. Jupiter at the moment of occultation is shown here. In the picture is also Callisto at lower left.

    Occultation by Adrastea (J-XV)
    This event takes place in Mongolia, south Russia, Turkey, Greece and south Italy around 23:55 UT, and south of Spain around 23:56 UT on November 4, 2000. Shadow in path is shown for every 10 seconds. Duration of event ~1 second.
    Position of star wrt. Jupiter at the moment of occultation is shown here.

    Occultation by Metis (J-XVI)
    This event takes place in west Russia, Baltic states, southern Sweden and Norway around 04:10 UT, NE Canada around 04:12 UT, USA from Great Lakes (Duluth) to California (L.A.) around 04:14 UT on November 5, 2000. Shadow in path is shown for every 10 seconds. Duration of event ~1 second.
    Position of star wrt. Jupiter at the moment of occultation is shown here.

    Occultation by Adrastea (J-XV)
    This event takes place in north pole region and Alaska around 04:28 UTon November 5, 2000. Shadow in path is shown for every 10 seconds. Duration of event ~1 second.
    Position of star wrt. Jupiter at the moment of occultation is shown here.

    Accuracy of the used ephemeris should be around 0.2" hopefully, don't take the shown paths as accurate.

    Moreover dimmings by Jupiter's ring can be also seen, for European observers from ~23:20 UT on Nov 4, till star's D behind Jupiter's disk at ~0:29 UT on Nov 5, 2000.
    Same can be possibly seen after star emerges for European observers from Jupiter's disk ~3:19 UT till ~4:30 UT. These times are unsure by many minutes as I have only rough info.

    All calculations and graphs were prepared in GUIDE7 program of Bill Gray, which produces ephemeris for these tiny moonlets within 0.1" accuracy compared to JPL Horizons system. However absolute accuracy of the JPL Horizons system is unknown to me, I hope it is ~0.2".

    Data for the target star:
     * name: HIP 20994 = SAO 76633 = PPM 76633 = TYC 1277-01320-1
     * constellation: Taurus
     * J2000 position [h,m,s; o,',"]: 04h 30m 08.005s; +20o 52' 35.77"
     * position source: Hipparcos
     * estimated accuracy ["]: 0.04" (0.03", 0.02")
     * V mag [mag]: 9.84
     * B-V [mag]: +0.31
     * remarks:
    
    ----------------------------------------------------------------------------
    Jan Manek
    Stefanik Observatory                Private :
    Petrin 205                          Werichova 950
    118 46  Praha 1                     152 00  Praha 5 - Barrandov     |_|_|
    Czech Republic                      Czech Republic                  /   \
    Internet : jmanek@mbox.vol.cz                                      |-O-O-|
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