Update for (914) Palisana - December 8/9, 2001

Jan Manek's update

                      IOTA/IOTA-ES occultation update for
            (914) Palisana/ TYC 0762-03440-1 on December 8/9, 2001
       visible from N Finland, Sweden, Denmark, SE England and W France


Summary 

In the night of December 8/9, 2001 a 10.6 mag star TYC 0762-03440-1 will be occulted by a 79 km asteroid (914) Palisana. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and combined UCAC and Tycho-2 star position.

The updated path shows ~4 path width south shift with time ~0.4 minutes earlier compared to Edwin Goffin's nominal prediction.

Updated path runs over north Finland ~0:24 UT, Sweden from NE to SW around 00:25 UT, north-east Denmark ~00:25.6 UT, south-east England with London ~00:26.5 UT and extreme west of France with Brest ~00:27 UT. Within path uncertainty is also SE Norway, NW Germany, NW Netherlands, NW Belgium and even extreme NW Spain. Please check the path chart for details.

The event at one glimpse:
 * date and approx. UT time of event: December 9, 2001 @ 00:26 UT
 * magnitude of target star: 10.6
 * magnitude drop [mag]: 2.8
 * estimated maximum duration [s]: 5.3
 * path description: given above
 * Goffin's original chart reference: A01_1242

The occultation path:
 * approximate ground width [km]: 115
 * uncertainty [path widths]: 2.0
 * uncertainty in time [s]: 10
 * map: below
 * remarks: Path uncertainities are given according to nominal star
    position errors and expected asteroid positional accuracy.

Data for the target star:
 * name: TYC 0762-03440-1
 * constellation: Canis Minor
 * J2000 position [h,m,s; o,',"]: 07h 12m 45.3370s; +07o 46' 05.271"
 * position source: weighted mean from UCAC and Tycho-2
 * estimated accuracy ["]: 0.02" (0.01", 0.01")
 * V mag [mag]: 10.59
 * B-V [mag]: +1.05
 * remarks:
     Recent UCAC position was provided by Marion and Norbert Zacharias.
     Target star is in western Canis Minor, 3.6 degrees west of 2.9 mag star
     beta Canis Minor = SAO 115456. Target star is 6.4' south-west of 8.7 mag
     red star SAO 115083. There is 12.1 mag star just 1.2' north-east of target.

Close finding chart (prepared in GUIDE7):
 * occulted star is in center - labeled with cross
 * field is 1.5x1.5 degrees
 * limiting magnitude is 13.0
 * labeled stars have indicated SAO numbers





Data for the minor planet:
 * general information:
     number, name: (914) Palisana
     approx. diameter [km]: 79
 * orbital information
     orbit source: calculation Manek
     source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
     number of used observations: 79 USNO, 17 TMO
     number of rejected observations: 7 USNO
     time covered by the observations: 1998 02 02 - 2001 11 28
     rms residuals ["] (RA,DE): 0.09", 0.09"
     estimated positional accuracy at epoch of event ["]: 0.09", 0.09"
     remarks:

Data for the event:
 * UT date and time of least geocentric approach: 00:27.5 UT
 * approx. V mag of minor planet at event [mag]: 13.3
 * geocentric parallax of minor planet ["]: 4.296
 * magnitude drop [mag]: 2.8
 * estimated maximum duration [s]: 5.3
 * apparent motion of minor planet ["/h]: 36.43
 * angular distance to moon, phase of moon [deg,%]: 76, 37%
 * remarks:

Calculator(s): Jan Manek





Path coordinates:
                                                   Latitude   Latitude
                  Centre               Altitude       Path Limits
  E. Longitude   Latitude      U.T.   star   sun   Limit 1    Limit 2
   ........................... shortened .............................
      o  '  "     o  '  "    h  m  s     o     o    o  '  "    o  '  "
     46  0  0    72 57 52    0 23 32    24   -32   73 38  7   72 18 15
     44  0  0    72 28 15    0 23 36    24   -33   73  9  8   71 48  0
     42  0  0    71 56 37    0 23 39    25   -33   72 38 10   71 15 45
     40  0  0    71 22 53    0 23 43    26   -34   72  5  5   70 41 24
     38  0  0    70 46 56    0 23 47    26   -35   71 29 48   70  4 49
     36  0  0    70  8 39    0 23 52    27   -36   70 52 10   69 25 56
     34  0  0    69 27 57    0 23 57    28   -37   70 12  6   68 44 37
     32  0  0    68 44 43    0 24  2    29   -38   69 29 29   68  0 48
     30  0  0    67 58 51    0 24  7    30   -39   68 44 13   67 14 23
     28  0  0    67 10 17    0 24 13    31   -40   67 56 12   66 25 18
     26  0  0    66 18 56    0 24 20    31   -41   67  5 22   65 33 29
     24  0  0    65 24 46    0 24 27    32   -43   66 11 39   64 38 52
     22  0  0    64 27 43    0 24 34    33   -44   65 15  1   63 41 27
     20  0  0    63 27 49    0 24 42    34   -45   64 15 27   62 41 13
     18  0  0    62 25  2    0 24 50    35   -47   63 12 56   61 38 12
     16  0  0    61 19 27    0 24 59    36   -48   62  7 32   60 32 26
     14  0  0    60 11  7    0 25  9    37   -49   60 59 19   59 23 60
     12  0  0    59  0  8    0 25 19    38   -51   59 48 22   58 12 59
     10  0  0    57 46 39    0 25 30    39   -53   58 34 50   56 59 34
      8  0  0    56 30 50    0 25 41    40   -54   57 18 53   55 43 52
      6  0  0    55 12 51    0 25 53    41   -56   56  0 42   54 26  5
      4  0  0    53 52 56    0 26  5    41   -57   54 40 30   53  6 26
      2  0  0    52 31 19    0 26 18    42   -59   53 18 32   51 45  9
      0  0  0    51  8 16    0 26 31    42   -61   51 55  3   50 22 28
   -  2  0  0    49 44  1    0 26 45    43   -63   50 30 21   48 58 40
   -  4  0  0    48 18 53    0 26 59    43   -64   49  4 42   47 34  0
   -  6  0  0    46 53  7    0 27 13    43   -66   47 38 23   46  8 46
   -  8  0  0    45 27  0    0 27 28    44   -67   46 11 41   44 43 12
   - 10  0  0    44  0 50    0 27 42    44   -69   44 44 54   43 17 36
   - 12  0  0    42 34 52    0 27 57    43   -70   43 18 19   41 52 13
   - 14  0  0    41  9 22    0 28 12    43   -71   41 52 10   40 27 19
   - 16  0  0    39 44 34    0 28 27    43   -72   40 26 45   39  3  8
   - 18  0  0    38 20 45    0 28 42    42   -73   39  2 17   37 39 54
   ........................... shortened .............................

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Jan Manek
Stefanik Observatory                Private :
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Internet : jan.manek@worldonline.cz                                |-O-O-|
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