Update for (693) Zerbinetta - April 9/10, 2003 - South Africa

Jan Manek's update

                    IOTA/IOTA-ES occultation update for
             (693) Zerbinetta / TYC 5519-00881-1 on April 9/10, 2003
     visible from Saudi Arabia, NE Egypt, Sicilia, Sardegna and S France

Summary 

In the night of April 9/10, 2003 a faint 10.7 mag star TYC 5519-00881-1 will be occulted by a 69 km asteroid (693) Zerbinetta. This update is based on USNO/Flagstaff astrometry for the asteroid and recent UCAC star position.

The updated path shows ~4 path width south shift with time 0.3 minutes later compared to Edwin Goffin's nominal prediction.

Updated path runs over SE Australia ~18:08.9 UT, N South Africa around 18:20.5 UT with Pretoria in path and Johannesburg just south of south limit. Follows SW Botswana ~18:21.1 UT and middle Namibia ~18:21.7 UT. Please check the path chart for details.

Clear sky and good luck !!!

The event at one glimpse:
 * date and approx. UT time of event: April 09, 2003 @ 18:09 UT (Australia)
                                                       18:21 UT (South Africa)
 * magnitude of target star: 11.7
 * magnitude drop [mag]: 2.1
 * estimated maximum duration [s]: 5.5
 * path description: given above
 * Goffin's original chart reference: A03_0453

The occultation path:
 * approximate ground width [km]: 80
 * uncertainty [path widths]: 1.3
 * uncertainty in time [s]: 7
 * map: below
 * remarks: Path uncertainties are given according to nominal star
    position errors and expected asteroid positional accuracy.

Data for the target star:
 * name: TYC 5519-00881-1
 * constellation: Virgo
 * J2000 position [h,m,s; o,',"]: 12h 06m 58.8396s; -07o 57' 08.460"
 * position source: recent UCAC position combined with Tycho-2 proper motion
 * estimated accuracy ["]: 0.03" (0.02", 0.02")
 * V mag [mag]: 11.70
 * B-V [mag]: +1.28
 * remarks:
    Target star is in south-west Virgo, rather far from bright stars.
    !!! IMPORTANT !!!
    Purple stars in identification chart are so called 'non-star' objects in GSC; in dense fields
    the 'non-stars' are often real stars or blends of close pairs. Be careful about this.

Close finding chart (prepared in GUIDE8):
 * occulted star is in center - labeled with cross
 * field is 4.0x4.0 degrees
 * limiting magnitude is 13.0
 * labeled stars have indicated SAO numbers
 * remarks: Second chart is 30' blowup to show correctly the target star in the field.











Data for the minor planet:
 * general information:
     number, name: (693) Zerbinetta
     approx. diameter [km]: 69
 * orbital information
     orbit source: calculation Manek
     source of used astrometry: USNO/Flagstaff (Ron Stone)
     number of used observations: 99 USNO
     number of rejected observations: 27 USNO
     time covered by the observations: 1998 03 04 - 2003 04 01
     rms residuals ["] (RA,DE): 0.08", 0.07"
     estimated positional accuracy at epoch of event ["]: 0.06", 0.06"
     remarks:

Data for the event:
 * UT date and time of least geocentric approach: 18:16.0 UT
 * approx. V mag of minor planet at event [mag]: 13.6
 * geocentric parallax of minor planet ["]: 4.459
 * magnitude drop [mag]: 2.1
 * estimated maximum duration [s]: 5.5
 * apparent motion of minor planet ["/h]: 31.80
 * angular distance to moon, phase of moon [deg,%]: 78, 48%
 * remarks:

Elements for WinOccult:
============ cut here ===========================================
 2003 Apr 09
693 Zerbinetta
18h 16.0m UT
19-00881-1  11.7   12  6 58.840- 7 57  8.46TYC 5519-00881-1
13.6     69    5.5   1.972    -2.120      4.37
   70.165  -7.954   -93.59    7.63
 18.2666  -.05663  -.40584 -7.06411  0.97994  0.00162 -0.00001
2000    266.7790432003 4 1.00000292.757893351.98258514.201916 0.026017752.943890352.867296949.385   0.15
RATE 1.9512890 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000
============ cut here ===========================================

Calculator(s): Jan Manek











Path coordinates:
                  Centre              Star  Star   Sun      Path Limits           Error Limits
  E. Longitude   Latitude      U.T.    Alt    Az   Alt    Limit 1    Limit 2    Limit 3    Limit 4
                                                         Latitude   Latitude   Latitude   Latitude
    ...................................... shortened .............................................
      o  '  "     o  '  "    h  m  s     o     o     o    o  '  "    o  '  "    o  '  "    o  '  "
    161  0  0   -32 45 12   18  8 22     5   264   -19  -32 24 33  -33  5 55  -31 31 31  -33 59 37
    160  0  0   -32 52 41   18  8 23     6   264   -19  -32 32  2  -33 13 23  -31 39  1  -34  7  4
    159  0  0   -33  0  0   18  8 24     7   265   -20  -32 39 22  -33 20 42  -31 46 22  -34 14 21
    158  0  0   -33  7 10   18  8 25     8   266   -21  -32 46 32  -33 27 51  -31 53 34  -34 21 30
    157  0  0   -33 14 11   18  8 26     9   266   -22  -32 53 33  -33 34 51  -32  0 36  -34 28 28
    156  0  0   -33 21  2   18  8 27     9   267   -23  -33  0 25  -33 41 42  -32  7 28  -34 35 18
    155  0  0   -33 27 43   18  8 29    10   267   -24  -33  7  6  -33 48 23  -32 14 11  -34 41 57
    154  0  0   -33 34 14   18  8 30    11   268   -24  -33 13 38  -33 54 54  -32 20 44  -34 48 27
    153  0  0   -33 40 36   18  8 32    12   268   -25  -33 20  1  -34  1 15  -32 27  8  -34 54 47
    152  0  0   -33 46 48   18  8 33    13   269   -26  -33 26 13  -34  7 27  -32 33 21  -35  0 58
    151  0  0   -33 52 50   18  8 35    14   269   -27  -33 32 16  -34 13 28  -32 39 25  -35  6 58
    150  0  0   -33 58 43   18  8 37    14   270   -28  -33 38  8  -34 19 20  -32 45 18  -35 12 49
    149  0  0   -34  4 25   18  8 39    15   271   -28  -33 43 51  -34 25  2  -32 51  2  -35 18 30
    148  0  0   -34  9 57   18  8 41    16   271   -29  -33 49 24  -34 30 34  -32 56 36  -35 24  1
    147  0  0   -34 15 20   18  8 44    17   272   -30  -33 54 46  -34 35 56  -33  2  0  -35 29 22
    146  0  0   -34 20 32   18  8 46    18   272   -31  -33 59 59  -34 41  8  -33  7 13  -35 34 33
    145  0  0   -34 25 34   18  8 49    18   273   -32  -34  5  1  -34 46  9  -33 12 16  -35 39 33
    144  0  0   -34 30 26   18  8 51    19   274   -32  -34  9 53  -34 51  1  -33 17  9  -35 44 24
    143  0  0   -34 35  7   18  8 54    20   274   -33  -34 14 35  -34 55 42  -33 21 52  -35 49  4
    142  0  0   -34 39 39   18  8 57    21   275   -34  -34 19  7  -35  0 13  -33 26 25  -35 53 34
    141  0  0   -34 44  0   18  8 59    22   275   -35  -34 23 29  -35  4 34  -33 30 47  -35 57 54
    140  0  0   -34 48 11   18  9  2    23   276   -35  -34 27 40  -35  8 45  -33 34 59  -36  2  4
    139  0  0   -34 52 11   18  9  5    23   277   -36  -34 31 41  -35 12 45  -33 39  1  -36  6  4
    138  0  0   -34 56  1   18  9  9    24   277   -37  -34 35 31  -35 16 35  -33 42 52  -36  9 53
    137  0  0   -34 59 41   18  9 12    25   278   -38  -34 39 11  -35 20 14  -33 46 32  -36 13 31
    136  0  0   -35  3 10   18  9 15    26   279   -38  -34 42 41  -35 23 43  -33 50  3  -36 17  0
    135  0  0   -35  6 29   18  9 19    26   279   -39  -34 46  0  -35 27  2  -33 53 22  -36 20 18
    134  0  0   -35  9 38   18  9 22    27   280   -40  -34 49  9  -35 30 10  -33 56 32  -36 23 26
    133  0  0   -35 12 36   18  9 26    28   280   -41  -34 52  7  -35 33  8  -33 59 31  -36 26 23
    132  0  0   -35 15 23   18  9 30    29   281   -41  -34 54 55  -35 35 56  -34  2 19  -36 29 10
    131  0  0   -35 18  1   18  9 33    30   282   -42  -34 57 32  -35 38 32  -34  4 57  -36 31 46
    130  0  0   -35 20 27   18  9 37    30   283   -43  -34 59 59  -35 40 59  -34  7 24  -36 34 12
    129  0  0   -35 22 43   18  9 41    31   283   -43  -35  2 15  -35 43 15  -34  9 40  -36 36 28
    128  0  0   -35 24 49   18  9 45    32   284   -44  -35  4 21  -35 45 20  -34 11 47  -36 38 33
    127  0  0   -35 26 44   18  9 49    33   285   -45  -35  6 16  -35 47 15  -34 13 42  -36 40 27
    126  0  0   -35 28 28   18  9 54    33   285   -45  -35  8  1  -35 49  0  -34 15 27  -36 42 12
    125  0  0   -35 30  2   18  9 58    34   286   -46  -35  9 35  -35 50 34  -34 17  1  -36 43 45
    124  0  0   -35 31 26   18 10  2    35   287   -47  -35 10 58  -35 51 57  -34 18 25  -36 45  9
    123  0  0   -35 32 39   18 10  7    36   288   -47  -35 12 11  -35 53 10  -34 19 38  -36 46 21
    122  0  0   -35 33 41   18 10 11    37   288   -48  -35 13 14  -35 54 12  -34 20 41  -36 47 23
    121  0  0   -35 34 33   18 10 16    37   289   -49  -35 14  6  -35 55  4  -34 21 33  -36 48 15
    120  0  0   -35 35 15   18 10 21    38   290   -49  -35 14 47  -35 55 46  -34 22 14  -36 48 57
    119  0  0   -35 35 46   18 10 26    39   291   -50  -35 15 18  -35 56 16  -34 22 45  -36 49 27
    118  0  0   -35 36  6   18 10 30    39   291   -51  -35 15 38  -35 56 37  -34 23  6  -36 49 48
    117  0  0   -35 36 16   18 10 35    40   292   -51  -35 15 48  -35 56 47  -34 23 15  -36 49 58
    116  0  0   -35 36 15   18 10 40    41   293   -52  -35 15 47  -35 56 46  -34 23 15  -36 49 57
    115  0  0   -35 36  4   18 10 45    42   294   -53  -35 15 36  -35 56 35  -34 23  3  -36 49 46
    114  0  0   -35 35 42   18 10 51    42   295   -53  -35 15 15  -35 56 13  -34 22 41  -36 49 25
    113  0  0   -35 35 10   18 10 56    43   296   -54  -35 14 42  -35 55 41  -34 22  9  -36 48 53
    112  0  0   -35 34 28   18 11  1    44   297   -54  -35 14  0  -35 54 59  -34 21 26  -36 48 11
    ...................................... shortened .............................................
     38  0  0   -27 30 50   18 19 26    55    63   -41  -27  9 57  -27 51 47  -26 16 20  -28 46  5
     37  0  0   -27 19 48   18 19 33    54    64   -40  -26 58 55  -27 40 45  -26  5 17  -28 35  3
     36  0  0   -27  8 42   18 19 40    53    65   -39  -26 47 49  -27 29 39  -25 54 11  -28 23 58
     35  0  0   -26 57 32   18 19 47    52    66   -39  -26 36 38  -27 18 29  -25 43  0  -28 12 48
     34  0  0   -26 46 18   18 19 54    52    67   -38  -26 25 25  -27  7 16  -25 31 46  -28  1 35
     33  0  0   -26 35  2   18 20  0    51    68   -37  -26 14  8  -26 55 59  -25 20 29  -27 50 19
     32  0  0   -26 23 42   18 20  7    50    69   -36  -26  2 48  -26 44 39  -25  9  8  -27 38 59
     31  0  0   -26 12 19   18 20 14    49    70   -35  -25 51 25  -26 33 16  -24 57 45  -27 27 37
     30  0  0   -26  0 53   18 20 20    49    71   -34  -25 39 59  -26 21 51  -24 46 19  -27 16 11
     29  0  0   -25 49 25   18 20 27    48    72   -34  -25 28 31  -26 10 22  -24 34 51  -27  4 43
     28  0  0   -25 37 54   18 20 33    47    73   -33  -25 17  0  -25 58 52  -24 23 20  -26 53 13
     27  0  0   -25 26 22   18 20 39    46    74   -32  -25  5 27  -25 47 19  -24 11 47  -26 41 40
     26  0  0   -25 14 47   18 20 46    46    75   -31  -24 53 53  -25 35 44  -24  0 12  -26 30  6
     25  0  0   -25  3 10   18 20 52    45    76   -30  -24 42 16  -25 24  8  -23 48 36  -26 18 29
     24  0  0   -24 51 32   18 20 58    44    77   -29  -24 30 38  -25 12 30  -23 36 58  -26  6 51
     23  0  0   -24 39 53   18 21  4    43    77   -28  -24 18 59  -25  0 51  -23 25 18  -25 55 12
     22  0  0   -24 28 12   18 21 10    42    78   -28  -24  7 18  -24 49 10  -23 13 38  -25 43 31
     21  0  0   -24 16 31   18 21 16    41    79   -27  -23 55 37  -24 37 28  -23  1 57  -25 31 50
     20  0  0   -24  4 49   18 21 22    41    80   -26  -23 43 55  -24 25 46  -22 50 15  -25 20  7
     19  0  0   -23 53  6   18 21 27    40    80   -25  -23 32 12  -24 14  4  -22 38 32  -25  8 24
     18  0  0   -23 41 23   18 21 33    39    81   -24  -23 20 29  -24  2 21  -22 26 50  -24 56 41
     17  0  0   -23 29 40   18 21 38    38    82   -23  -23  8 46  -23 50 37  -22 15  7  -24 44 58
     16  0  0   -23 17 57   18 21 44    37    82   -22  -22 57  4  -23 38 55  -22  3 25  -24 33 14
     15  0  0   -23  6 15   18 21 49    36    83   -21  -22 45 22  -23 27 12  -21 51 43  -24 21 32
     14  0  0   -22 54 33   18 21 54    36    83   -20  -22 33 40  -23 15 30  -21 40  2  -24  9 49
     13  0  0   -22 42 52   18 21 59    35    84   -20  -22 21 59  -23  3 49  -21 28 21  -23 58  8
     12  0  0   -22 31 12   18 22  4    34    85   -19  -22 10 19  -22 52  9  -21 16 42  -23 46 27
     11  0  0   -22 19 34   18 22  9    33    85   -18  -21 58 41  -22 40 30  -21  5  4  -23 34 48
     10  0  0   -22  7 57   18 22 14    32    86   -17  -21 47  4  -22 28 53  -20 53 28  -23 23 10
    ...................................... shortened .............................................

----------------------------------------------------------------------------
Jan Manek
Stefanik Observatory                Private :
Petrin 205                          Werichova 950
118 46  Praha 1                     152 00  Praha 5 - Barrandov     |_|_|
Czech Republic                      Czech Republic                  /   \
Internet : jan.manek@worldonline.cz                                |-O-O-|
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