Update for (1024) Hale - March 23/24, 2004

  • Preliminary update computed by Jan Manek;   issued 28 Feb 2004 20:16 +0100 (CET)
  • Final update computed by Jan Manek;   issued 13 Mar 2004 22:51 +0100 (CET)
  • Correction to final update computed by Jan Manek;   issued 21 Mar 2004 23:24 +0100 (CET)

  • Jan Manek's preliminary update

                         IOTA/IOTA-ES occultation update for
                   (1024) Hale / HIP 72388 = SAO 140145 on March 23/24, 2004
           visible from Asia, Caucasus area, Crimea, Moldavia, N Romania, NE Hungary,
          Slovakia, Czechia, middle Germany, Netherlands, N England and North Ireland
    
    Summary 

    In the night of March 23/24, 2004 a bright 7.8 mag star HIP 72388 = SAO 140145 will be occulted by a 43 km asteroid (1024) Hale. This update is based on USNO/Flagstaff astrometry for the asteroid and Hipparcos star position.

    The updated path shows ~2 path width north shift with small time correction compared to Eric Frappa's nominal prediction. Second update will possibly follow if new observations from this opposition will appear.

    Updated path runs over Asia 22:56-23:01 UT, Caucasus area around 23:02.2 UT, Crimea ~23:03.6 UT, Moldavia ~23:03.2 UT, N Romania ~23:04.5 UT, NE Hungary ~23:04.9 UT, Slovakia ~23:05.0 UT, Czechia ~23:05.5 UT, middle Germany ~23:05.9 UT, Netherlands ~23:06.1 UT, N England ~23:06.5 UT and North Ireland ~23:06.7 UT. Please check the path chart for details.

    Here is current station list for European cities and observatories plus other sites.
    If you would like to have your station listed with other observetories and sites, send me your request using the structure descripted here

    Clear sky and good luck !!!

    The event at one glimpse:
     * date and approx. UT time of event: March 23, 2004 @ 23:05 UT (Europe)
     * magnitude of target star: 7.8
     * magnitude drop [mag]: 8.4
     * estimated maximum duration [s]: 4.5
     * approx. V mag of minor planet at event [mag]: 16.2
     * geocentric parallax of minor planet ["]: 3.382
     * apparent motion of minor planet ["/h]: 18.58
     * angular distance to moon, phase of moon [deg,%]: 170, 9%
     * Goffin's original chart reference: A04_XXXX
    
    The occultation path with path maps:
     * approximate ground width [km]: 60
     * uncertainty [path widths]: 2.4
     * uncertainty in time [s]: 18
     * map: Overview
            European part
     * remarks: Path uncertainties [2 sigmas] are given according to nominal star
                position errors and expected asteroid positional accuracy.
    
    Elements for WinOccult - use 'Save as ...' to download and save these elements.
    
    Finding charts (prepared in GUIDE8):
     * occulted star is in center - labeled with cross
     * labeled stars have indicated SAO numbers
     * (smaller) square box shows 30' field in all wider field charts
     * (larger) square box shows 3° field in wide field charts
     * remarks:
       Target star is in north Libra, about 2.2 degrees east of 3.9 mag star mu Virginis = SAO 140090.
       !!! 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.
       40-degree chart
       3-degree chart
       0.5-degree chart
    
    Data for the target star:
     * name: HIP 72388 = SAO 140145 = PPM 197926 = TYC 4994-00498-1
     * constellation: Libra
     * J2000 position [h,m,s; o,',"]: 14h 48m 02.2628s; -05o 30' 23.919"
     * position source: Hipparcos
     * estimated accuracy ["]: 0.02" (0.02", 0.01")
     * V mag [mag]: 7.78
     * B-V [mag]: +1.13
     * remarks: Position includes parallax.
                Acceleration terms were not included.
    
    Data for the minor planet:
     * general information:
         number, name: (1024) Hale
         approx. diameter [km]: 43
     * orbital information
         orbit source: calculation Manek
         source of used astrometry: USNO/Flagstaff (Ron Stone)
         number of used observations: 96 USNO
         number of rejected observations: 0
         time covered by the observations: 1998 03 10 - 2003 04 30
         rms residuals ["] (RA,DE): 0.11", 0.11"
         estimated positional accuracy at epoch of event ["]: 0.08", 0.05"
         remarks:
    
    Path coordinates: click here
    
    Calculator(s): Jan Manek
    
    ----------------------------------------------------------------------------
    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 AT worldonline.cz                             |-O-O-|
    --------------------------------------------------------------------U---U---
    

    Jan Manek's final update

                         IOTA/IOTA-ES occultation update for
                   (1024) Hale / HIP 72388 = SAO 140145 on March 23/24, 2004
           visible from Asia, Caucasus area, Crimea, Moldavia, N Romania, NE Hungary,
          Slovakia, Czechia, middle Germany, Netherlands, N England and North Ireland
    
    Summary 

    In the night of March 23/24, 2004 a bright 7.8 mag star HIP 72388 = SAO 140145 will be occulted by a 43 km asteroid (1024) Hale. This update is based on USNO/Flagstaff astrometry for the asteroid and Hipparcos star position.

    The updated path shows ~2 path width north shift with small time correction compared to Eric Frappa's nominal prediction. Only very small correction to preliminary update. Only one new FASTT position from this year's opposition.

    Updated path runs over Asia 22:56-23:01 UT, Caucasus area around 23:02.2 UT, Crimea ~23:03.6 UT, Moldavia ~23:03.2 UT, N Romania ~23:04.5 UT, NE Hungary ~23:04.9 UT, Slovakia ~23:05.0 UT, Czechia ~23:05.5 UT, middle Germany ~23:05.9 UT, Netherlands ~23:06.1 UT, N England ~23:06.5 UT and North Ireland ~23:06.7 UT. Please check the path chart for details.

    Here is current station list for European cities and observatories plus other sites.
    If you would like to have your station listed with other observetories and sites, send me your request using the structure descripted here

    Clear sky and good luck !!!

    The event at one glimpse:
     * date and approx. UT time of event: March 23, 2004 @ 23:05 UT (Europe)
     * magnitude of target star: 7.8
     * magnitude drop [mag]: 8.4
     * estimated maximum duration [s]: 4.5
     * approx. V mag of minor planet at event [mag]: 16.2
     * geocentric parallax of minor planet ["]: 3.382
     * apparent motion of minor planet ["/h]: 18.58
     * angular distance to moon, phase of moon [deg,%]: 170, 9%
     * Goffin's original chart reference: A04_XXXX
    
    The occultation path with path maps:
     * approximate ground width [km]: 60
     * uncertainty [path widths]: 3.3
     * uncertainty in time [s]: 24
     * map: Overview
            European part
     * remarks: Path uncertainties [2 sigmas] are given according to nominal star
                position errors and expected asteroid positional accuracy.
    
    Elements for WinOccult - use 'Save as ...' to download and save these elements.
    
    Finding charts (prepared in GUIDE8):
     * occulted star is in center - labeled with cross
     * labeled stars have indicated SAO numbers
     * (smaller) square box shows 30' field in all wider field charts
     * (larger) square box shows 3° field in wide field charts
     * remarks:
       Target star is in north Libra, about 2.2 degrees east of 3.9 mag star mu Virginis = SAO 140090.
       !!! 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.
       40-degree chart
       3-degree chart
       0.5-degree chart
    
    Data for the target star:
     * name: HIP 72388 = SAO 140145 = PPM 197926 = TYC 4994-00498-1
     * constellation: Libra
     * J2000 position [h,m,s; o,',"]: 14h 48m 02.2628s; -05o 30' 23.919"
     * position source: Hipparcos
     * estimated accuracy ["]: 0.02" (0.02", 0.01")
     * V mag [mag]: 7.78
     * B-V [mag]: +1.13
     * remarks: Position includes parallax.
                Acceleration terms were not included.
    
    Data for the minor planet:
     * general information:
         number, name: (1024) Hale
         approx. diameter [km]: 43
     * orbital information
         orbit source: calculation Manek
         source of used astrometry: USNO/Flagstaff (Ron Stone)
         number of used observations: 97 USNO
         number of rejected observations: 0
         time covered by the observations: 1998 03 10 - 2004 03 04
         rms residuals ["] (RA,DE): 0.11", 0.11"
         estimated positional accuracy at epoch of event ["]: 0.09", 0.06"
         remarks:
    
    Path coordinates: click here
    
    Calculator(s): Jan Manek
    
    ----------------------------------------------------------------------------
    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 AT worldonline.cz                             |-O-O-|
    --------------------------------------------------------------------U---U---
    

    Jan Manek's corection to final update

                         IOTA/IOTA-ES occultation update for
                   (1024) Hale / HIP 72388 = SAO 140145 on March 23/24, 2004
           visible from Asia, Caucasus area, Crimea, Moldavia, N Romania, NE Hungary,
          Slovakia, Czechia, middle Germany, Netherlands, N England and North Ireland
    
    Summary 

    In the night of March 23/24, 2004 a bright 7.8 mag star HIP 72388 = SAO 140145 will be occulted by a 43 km asteroid (1024) Hale. This update is based on USNO/Flagstaff, Ondrejov and OAC astrometry for the asteroid and Hipparcos star position.

    The updated path shows ~1 path width north shift with small time correction compared to Eric Frappa's nominal prediction and 1 path width south shift to 'final' update.

    Updated path runs over Asia 22:56-23:01 UT, Caucasus area around 23:02.2 UT, Crimea ~23:03.6 UT, Moldavia ~23:03.2 UT, N Romania ~23:04.5 UT, NE Hungary ~23:04.9 UT, Slovakia ~23:05.0 UT, Czechia ~23:05.5 UT, middle Germany ~23:05.9 UT, Netherlands ~23:06.1 UT, N England ~23:06.5 UT and North Ireland ~23:06.7 UT. Please check the path chart for details.

    Here is current station list for European cities and observatories plus other sites.
    If you would like to have your station listed with other observetories and sites, send me your request using the structure descripted here

    Clear sky and good luck !!!

    The event at one glimpse:
     * date and approx. UT time of event: March 23, 2004 @ 23:05 UT (Europe)
     * magnitude of target star: 7.8
     * magnitude drop [mag]: 8.4
     * estimated maximum duration [s]: 4.5
     * approx. V mag of minor planet at event [mag]: 16.2
     * geocentric parallax of minor planet ["]: 3.382
     * apparent motion of minor planet ["/h]: 18.58
     * angular distance to moon, phase of moon [deg,%]: 170, 9%
     * Goffin's original chart reference: A04_XXXX
    
    The occultation path with path maps:
     * approximate ground width [km]: 60
     * uncertainty [path widths]: 2.7
     * uncertainty in time [s]: 20
     * map: Overview
            European part
     * remarks: Path uncertainties [2 sigmas] are given according to nominal star
                position errors and expected asteroid positional accuracy.
    
    Elements for WinOccult - use 'Save as ...' to download and save these elements.
    
    Finding charts (prepared in GUIDE8):
     * occulted star is in center - labeled with cross
     * labeled stars have indicated SAO numbers
     * (smaller) square box shows 30' field in all wider field charts
     * (larger) square box shows 3° field in wide field charts
     * remarks:
       Target star is in north Libra, about 2.2 degrees east of 3.9 mag star mu Virginis = SAO 140090.
       !!! 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.
       40-degree chart
       3-degree chart
       0.5-degree chart
    
    Data for the target star:
     * name: HIP 72388 = SAO 140145 = PPM 197926 = TYC 4994-00498-1
     * constellation: Libra
     * J2000 position [h,m,s; o,',"]: 14h 48m 02.2628s; -05o 30' 23.919"
     * position source: Hipparcos
     * estimated accuracy ["]: 0.02" (0.02", 0.01")
     * V mag [mag]: 7.78
     * B-V [mag]: +1.13
     * remarks: Position includes parallax.
                Acceleration terms were not included.
    
    Data for the minor planet:
     * general information:
         number, name: (1024) Hale
         approx. diameter [km]: 43
     * orbital information
         orbit source: calculation Manek
         source of used astrometry: USNO/Flagstaff (Ron Stone), Ondrejov (Kusnirak, Manek), OAC (Lopez, Pacheco)
         number of used observations: 97 USNO, 4 Ondrejov, 5 OAC
         number of rejected observations: 0
         time covered by the observations: 1998 03 10 - 2004 03 21
         rms residuals ["] (RA,DE): 0.11", 0.11"
         estimated positional accuracy at epoch of event ["]: 0.08", 0.06"
         remarks:
    
    Path coordinates: click here
    
    Calculator(s): Jan Manek
    
    ----------------------------------------------------------------------------
    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 AT worldonline.cz                             |-O-O-|
    --------------------------------------------------------------------U---U---
    

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