Update for (612) Veronika - November 20/21, 2002

Jan Manek's update

                    IOTA/IOTA-ES occultation update for
    (612) Veronika / TYC 4818-01219-1 = SAO 134115 on November 20/21, 2002
           visible from Russia, Kazachstan, Georgia, Turkey, middle East,
                          Egypt, Brasil and Argentina

Summary 

In the night of November 20/21, 2002 a 8.8 mag star TYC 4818-01219-1 = SAO 134115 will be occulted by a 41 km asteroid (612) Veronika. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and Tycho-2 position.

The updated path shows ~25 path width south shift with time 1.9 minutes later minutes compared to Edwin Goffin's nominal prediction.

Updated path runs over Russia ~1:21.5 UT, Kazachstan ~1:22 UT, Georgia ~1:23.5 UT, Turkey ~1:24 UT, middle East ~1:25 UT, Egypt with Alexandria ~1:25.5 UT. Thenafter path runs to southwest over Africa and Atlantic Ocean to reach finally south Brazil ~1:38 UT and Argentina ~1:38.5 UT at low altitudes. Please check the path chart for details.

Clear sky and good luck !!!

The event at one glimpse:
 * date and approx. UT time of event: November 21, 2002 @ 01:25 UT (middle East)
                                                          01:38 UT (S.America)
 * magnitude of target star: 8.8
 * magnitude drop [mag]: 8.2
 * estimated maximum duration [s]: 3.5
 * path description: given above
 * Goffin's original chart reference: A02_1131

The occultation path:
 * approximate ground width [km]: 45
 * uncertainty [path widths]: 3.0
 * uncertainty in time [s]: 11
 * map: below
 * remarks: Path uncertainties are given according to nominal star
    position errors and expected asteroid positional accuracy.

Data for the target star:
 * name: SAO 134115 = PPM 176638 = TYC 4818-01219-1
 * constellation: Monoceros
 * J2000 position [h,m,s; o,',"]: 07h 03m 18.9827s; -02o 03' 29.769"
 * position source: Tycho-2
 * estimated accuracy ["]: 0.02" (0.015", 0.015")
 * V mag [mag]: 8.76
 * B-V [mag]: +0.30
 * remarks:
    Target star is in middle Monoceros, 2.6 degrees SW of 4.2 mag star delta Aurigae = SAO 134330.
    !!! 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 GUIDE7):
 * occulted star is in center - labeled with cross
 * field is 3.0x3.0 degrees
 * limiting magnitude is 12.0
 * labeled stars have indicated SAO numbers
 * remarks:





Data for the minor planet:
 * general information:
     number, name: (612) Veronika
     approx. diameter [km]: 41
 * orbital information
     orbit source: calculation Manek
     source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
     number of used observations: 63 USNO, 6 TMO
     number of rejected observations: 11 USNO
     time covered by the observations: 1998 02 14 - 2002 11 04
     rms residuals ["] (RA,DE): 0.09", 0.09"
     estimated positional accuracy at epoch of event ["]: 0.05", 0.05"
     remarks:

Data for the event:
 * UT date and time of least geocentric approach: 01:29.7 UT
 * approx. V mag of minor planet at event [mag]: 17.0
 * geocentric parallax of minor planet ["]: 3.038
 * magnitude drop [mag]: 8.2
 * estimated maximum duration [s]: 3.5
 * apparent motion of minor planet ["/h]: 19.97
 * angular distance to moon, phase of moon [deg,%]: 44, 99%
 * remarks:

Elements for WinOccult:
============ cut here ===========================================
 2002 Nov 21
612 Veronika
 1h 29.7m UT
18-01219-1   8.8    7  3 18.983- 2  3 29.77TYC 4818-01219-1
17.0     41    3.5   2.895    -0.904    -14.68
   23.512  -2.054   154.01  -19.84
  1.4953  -.20952   .19363 -4.45701 -4.83348 -0.00431  0.00217
2000    105.87788220021112.00000118.961026203.99735620.738472 0.263894553.152315072.3204363011.25   0.15
RATE 1.7610020 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000
============ cut here ===========================================

Calculator(s): Jan Manek









Path coordinates:
                  Center               Altitude       Path Limits
  E. Longitude   Latitude      U.T.   star   sun   Limit 1    Limit 2
   ........................... shortened .............................
      o  '  "     o  '  "    h  m  s     o     o    o  '  "    o  '  "
                                                   Latitude   Latitude
     89  0  0    61 35 36    1 21 10    11    -7   61 48  1   61 23 11
     87  0  0    61 12  6    1 21 12    12    -8   61 24 39   60 59 34
     85  0  0    60 46 36    1 21 14    13    -8   60 59 17   60 33 56
     83  0  0    60 19  0    1 21 16    14    -9   60 31 51   60  6 11
     81  0  0    59 49 13    1 21 19    15   -10   60  2 13   59 36 15
     79  0  0    59 17  9    1 21 22    16   -11   59 30 18   59  4  0
     77  0  0    58 42 40    1 21 25    17   -11   58 56  0   58 29 21
     75  0  0    58  5 41    1 21 29    18   -12   58 19 12   57 52 11
     73  0  0    57 26  3    1 21 33    20   -13   57 39 45   57 12 22
     71  0  0    56 43 39    1 21 37    21   -14   56 57 34   56 29 46
     69  0  0    55 58 21    1 21 42    22   -15   56 12 28   55 44 16
     67  0  0    55 10  1    1 21 48    24   -16   55 24 21   54 55 43
     65  0  0    54 18 30    1 21 53    25   -16   54 33  3   54  3 59
     63  0  0    53 23 39    1 21 60    26   -17   53 38 25   53  8 55
     61  0  0    52 25 20    1 22  7    28   -18   52 40 20   52 10 22
     59  0  0    51 23 24    1 22 14    30   -20   51 38 37   51  8 12
     57  0  0    50 17 42    1 22 23    31   -21   50 33 10   50  2 17
     55  0  0    49  8  8    1 22 32    33   -22   49 23 49   48 52 28
     53  0  0    47 54 33    1 22 42    35   -23   48 10 28   47 38 40
     51  0  0    46 36 52    1 22 52    36   -24   46 53  1   46 20 46
     49  0  0    45 15  1    1 23  4    38   -25   45 31 22   44 58 41
     47  0  0    43 48 54    1 23 17    40   -27   44  5 28   43 32 23
     45  0  0    42 18 32    1 23 30    42   -28   42 35 18   42  1 49
     43  0  0    40 43 55    1 23 45    44   -30   41  0 52   40 27  1
     41  0  0    39  5  7    1 24  1    46   -31   39 22 13   38 48  2
     39  0  0    37 22 12    1 24 17    49   -33   37 39 28   37  4 59
     37  0  0    35 35 20    1 24 35    51   -34   35 52 43   35 17 60
     35  0  0    33 44 44    1 24 54    53   -36   34  2 13   33 27 17
     33  0  0    31 50 37    1 25 14    55   -37   32  8 11   31 33  5
     31  0  0    29 53 17    1 25 35    58   -39   30 10 54   29 35 43
     29  0  0    27 53  6    1 25 58    60   -40   28 10 45   27 35 30
     27  0  0    25 50 26    1 26 21    62   -42   26  8  5   25 32 50
     25  0  0    23 45 43    1 26 45    64   -43   24  3 21   23 28  8
     23  0  0    21 39 24    1 27  9    66   -45   21 56 58   21 21 51
     21  0  0    19 31 56    1 27 35    68   -46   19 49 26   19 14 28
   ........................... shortened .............................
   - 39  0  0   -26 24 28    1 37 25    27   -43  -26 12  9  -26 36 46
   - 41  0  0   -27  3  1    1 37 33    25   -42  -26 50 49  -27 15 13
   - 43  0  0   -27 38 26    1 37 40    23   -40  -27 26 20  -27 50 32
   - 45  0  0   -28 10 47    1 37 47    22   -39  -27 58 45  -28 22 47
   - 47  0  0   -28 40  5    1 37 54    20   -38  -28 28  9  -28 52  1
   - 49  0  0   -29  6 26    1 37 59    18   -37  -28 54 33  -29 18 17
   - 51  0  0   -29 29 50    1 38  5    16   -36  -29 18  2  -29 41 38
   - 53  0  0   -29 50 22    1 38  9    15   -35  -29 38 37  -30  2  6
   - 55  0  0   -30  8  2    1 38 13    13   -34  -29 56 21  -30 19 43
   - 57  0  0   -30 22 54    1 38 17    11   -33  -30 11 15  -30 34 33
   - 59  0  0   -30 34 58    1 38 20     9   -32  -30 23 21  -30 46 35
   - 61  0  0   -30 44 16    1 38 22     8   -30  -30 32 40  -30 55 51
   - 63  0  0   -30 50 47    1 38 24     6   -29  -30 39 13  -31  2 22
   - 65  0  0   -30 54 34    1 38 26     4   -28  -30 42 60  -31  6  8
   ........................... 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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