batgrbproduct analysis for trigger=1285677

batgrbproduct Analysis for Trigger=1285677

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Wed Jan 29 16:48:56 EST 2025
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1285677/GCN5_download_cron
======================================================================

  Trigger: 01285677      Segment: 000

  BAT Trigger Time: 759774208.696   [s; MET]
      Trigger Stop: 759774208.76   [s; MET]
               UTC: 2025-01-28T16:22:53.718560    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 231.419897727353   Dec: -0.517133136897832  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.64
     Image Trigger?:     NO
     Rate S/N Ratio:     24.7588368062799  [ if not an image trigger ]
     Image S/N Ratio:    7.64

  Flight Position:   [ source = BAT ]
    RA: 231.419897727353   Dec: -0.517133136897832  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 231.419285907106   Dec: -0.547836972229491  [deg; J2000]  
        { 15h 25m 40.6s , -00d 32' 52.2" }
         +/- 2.05759742159926 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.00730695287638 [arcmin] (formal 1-sigma fit error)
    SNR: 10.8507724404177
 
  Angular difference between Flight and Ground position is 1.842596 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 0.483999967575073 +/- 0.105905587598097
        Measured from: -0.00799989700317383
                   to: 0.476000070571899     [s; relative to TRIGTIME]
     T50: 0.220000028610229 +/- 0.117711563964456
        Measured from: 0.0200001001358032
                   to: 0.240000128746033     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.22599995136261     
                   to: 0.77400004863739     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0199999809265137     
                   to: 0.564000010490417     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.024022   0.035530   0.030670   0.017077
           0.005407   0.005452   0.004894   0.003696 [error]
 Peak      0.018471   0.030501   0.029442   0.011369
           0.006714   0.006784   0.005826   0.004675 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== Fluence/Peak Flux Summary ===
 
              Model    Band1    Band2    Band3    Band4    Band5    Total      
                       15-25    25-50   50-100  100-350   15-150   15-350   keV
Fluence   Power-law 7.67e-09 1.45e-08 2.13e-08 6.65e-08 6.02e-08 1.10e-07   erg/cm2
              Error 2.08e-09 2.45e-09 4.46e-09 2.99e-08 1.09e-08 3.33e-08   erg/cm2
Peak flux Power-law 1.99e-01 2.22e-01 1.77e-01 2.34e-01 6.84e-01 8.31e-01   ph/cm2/s
              Error 7.99e-02 5.52e-02 4.62e-02 1.28e-01 1.54e-01 1.88e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.13e-09 1.50e-08 2.22e-08 4.23e-08 5.95e-08 8.66e-08   erg/cm2
              Error 2.53e-09 2.86e-09 4.52e-09 4.87e-08 1.12e-08 4.39e-08   erg/cm2
Peak flux Cutoff-PL 1.75e-01 2.29e-01 1.88e-01 1.47e-01 6.69e-01 7.40e-01   ph/cm2/s
              Error 9.79e-02 6.15e-02 5.71e-02 1.84e-01 1.61e-01 2.36e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 1.88e-01 2.30e-01 1.86e-01 1.72e-01 6.85e-01 7.77e-01   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.450    0.277    -      -           1.08e-02 1.76e-03   60.830 57
CPL   1.092    0.920     138.3    0.0      1.60e-02 2.39e-02   60.470 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.326    0.383    -      -           5.70e-03 1.25e-03   68.900 57
CPL   0.815    1.855     129.8    0.0      9.79e-03 3.47e-02   68.560 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err   : 90% error of the photon index
Epeak      : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm       : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom
 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 0.448000 sec.
T50 in the 50-300 keV band: 0.192000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.584   -0.020    0.564
T90     0.484   -0.008    0.476
T50     0.220    0.020    0.240
Peak    1.000   -0.226    0.774
  • Click here for the BAT GCN circular template
  • Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte

    Image

    Pre-slew 15-350 keV image (Event data; bkg subtracted)

    #   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
      231.4193  -0.5478 0.0178   18.2  -15.6       0.1078    10.9  TRIG_01285677       
    ------------------------------------------
     
    Foreground time interval of the image:
     -0.020   0.564 (delta_t =   0.584 [sec])
    Background time interval of the image:
    -239.696 -56.730 (delta_t = 182.966 [sec])
    -55.696  -0.020 (delta_t =  55.676 [sec])
    

    Lightcurves

    Notes:

    1 s binning

    From T0-310 s to T0+310 s
    From T100_start - 20 s to T100_end + 30 s
    Full time interval

    64 ms binning

    Full time interval
    From T100_start to T100_end
    From T0-5 sec to T0+5 sec

    16 ms binning

    From T100_start-5 s to T100_start+5 s
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.064000
    

    8 ms binning

    From T100_start-3 s to T100_start+3 s
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.064000
    

    2 ms binning

    From T100_start-1 s to T100_start+1 s
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.064000
    

    SN=5 or 10 sec. binning (whichever binning is satisfied first)

    SN=5 or 10 sec. binning (T < 200 sec)

    Spectra

    Notes:

    Time averaged spectrum fit using the pre-slew DRM

    Power-law model
    Time interval is from   -0.020 sec. to    0.564 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.45031     ( -0.27183   0.28145 )
    Norm@50keV  : 1.07810E-02    ( -0.00177181   0.00175706 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.83 using 59 PHA bins.
    # Reduced chi-squared =          1.067 for     57 degrees of freedom 
    # Null hypothesis probability =   3.398837e-01
     
    Photon flux (15-150 keV)    in 0.584 sec: 1.32872 ( -0.216052  0.216502 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 6.0246e-08 ( -1.08503e-08  1.09587e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.020 sec. to    0.564 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.09212     ( -1.22133   0.618425 )
    Epeak [keV] : 138.344      ( -138.351 -138.351 )
    Norm@50keV  : 1.59511E-02    ( -0.00679202   0.0409657 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.47 using 59 PHA bins.
    # Reduced chi-squared =          1.080 for     56 degrees of freedom 
    # Null hypothesis probability =   3.176094e-01
     
    Photon flux (15-150 keV)    in 0.584 sec: 1.31138 ( -0.22246  0.22168 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.95335e-08 ( -1.11812e-08  1.11982e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.020 sec. to    0.564 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.08880   ( -0.603461   1.05571 )
    beta        : -10.0000    ( 10   20 )
    Epeak [keV] : 136.398      ( -64.383 -136.583 )
    Norm@50keV   : 1.60578E-02    ( -0.00689125   0.0408876 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.47 using 59 PHA bins.
    # Reduced chi-squared =          1.099 for     55 degrees of freedom 
    # Null hypothesis probability =   2.848610e-01
     
    Photon flux (15-150 keV)    in 0.584 sec: 1.31266 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 17.4374  (-3.34151  4.09437)
    R^2/D10^2   : 9.30325E-02  (-0.0475661   0.0979854)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          68.99 using 59 PHA bins.
    # Reduced chi-squared =          1.210 for     57 degrees of freedom 
    # Null hypothesis probability =   1.325680e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.340e-09   1.138e-09
    25- 50  1.508e-08   3.834e-09
    50-150  3.299e-08   1.053e-08
    15-150  5.141e-08   1.294e-08
    
    Thermal bremsstrahlung (OTTB)
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.363       (-80.6826      -199.363)
    Norm        : 5.47339       (-0.874592     0.874613)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  7.959e-09   4.579e-09
    25- 50  1.531e-08   8.620e-09
    50-150  3.358e-08   1.902e-08
    15-150  5.685e-08   3.200e-08
    
    Double BB
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 3.60112        (-2.27513      4.19243)
    R1^2/D10^2  : 18.6902        (-17.3298      26209)
    kT2 [keV]   : 21.3646        (-4.8134      8.68239)
    R2^2/D10^2  : 4.29756E-02    (-0.0304252   0.036414)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  7.976e-09   3.976e-09
    25- 50  1.270e-08   4.299e-09
    50-150  3.802e-08   1.685e-08
    15-150  5.870e-08   2.444e-08
    

    Peak spectrum fit

    Power-law model
    Time interval is from   -0.226 sec. to    0.774 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.32564     ( -0.382201   0.384007 )
    Norm@50keV  : 5.70171E-03    ( -0.00125292   0.00125098 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          68.90 using 59 PHA bins.
    # Reduced chi-squared =          1.209 for     57 degrees of freedom 
    # Null hypothesis probability =   1.342116e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.683586 ( -0.154113  0.154637 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.59991e-08 ( -1.34785e-08  1.36458e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.226 sec. to    0.774 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.814854     ( -2.03974   1.66996 )
    Epeak [keV] : 129.816      ( -129.611 -129.611 )
    Norm@50keV  : 9.78915E-03    ( -0.00524618   0.0642036 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          68.56 using 59 PHA bins.
    # Reduced chi-squared =          1.224 for     56 degrees of freedom 
    # Null hypothesis probability =   1.209084e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.668810 ( -0.16187  0.160396 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.49264e-08 ( -1.40133e-08  1.40494e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.226 sec. to    0.774 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.793236   ( -0.714346   2.01858 )
    beta        : -9.37088    ( 9.37154   19.3715 )
    Epeak [keV] : 130.066      ( -63.2079 -130.05 )
    Norm@50keV   : 9.87976E-03    ( -0.0047036   0.0286006 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          68.57 using 59 PHA bins.
    # Reduced chi-squared =          1.247 for     55 degrees of freedom 
    # Null hypothesis probability =   1.033465e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.684931 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    
    Single BB
     XSPEC: quit
     
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 18.6958  (-4.45308  6.23605)
    R^2/D10^2   : 3.89566E-02  (-0.0241688   0.0585562)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.692e-09   1.320e-09
    25- 50  1.280e-08   5.287e-09
    50-150  3.277e-08   1.477e-08
    15-150  4.826e-08   1.972e-08
    
    Thermal bremsstrahlung (OTTB)
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.363       (-90.0804      -199.363)
    Norm        : 2.84099       (-0.627024     0.627023)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  7.074e-09   4.266e-09
    25- 50  1.361e-08   8.065e-09
    50-150  2.985e-08   1.754e-08
    15-150  5.053e-08   2.904e-08
    
    Double BB
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 1.75092        (-1.49706      6.56202)
    R1^2/D10^2  : 1116.34        (-1307.11      -1307.35)
    kT2 [keV]   : 20.3596        (-4.93634      7.54718)
    R2^2/D10^2  : 2.83266E-02    (-0.021716   0.037126)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.218e-09   2.536e-09
    25- 50  1.137e-08   6.449e-09
    50-150  3.488e-08   1.824e-08
    15-150  5.147e-08   2.580e-08
    

    Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

    Power-law model
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.45031     ( -0.27183   0.28145 )
    Norm@50keV  : 1.07810E-02    ( -0.00177181   0.00175706 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.83 using 59 PHA bins.
    # Reduced chi-squared =          1.067 for     57 degrees of freedom 
    # Null hypothesis probability =   3.398837e-01
     
    Photon flux (15-150 keV)    in 0.584 sec: 1.32872 ( -0.216052  0.216502 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 6.0246e-08 ( -1.08503e-08  1.09587e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.09212     ( -1.22133   0.618425 )
    Epeak [keV] : 138.344      ( -138.351 -138.351 )
    Norm@50keV  : 1.59511E-02    ( -0.00679202   0.0409657 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.47 using 59 PHA bins.
    # Reduced chi-squared =          1.080 for     56 degrees of freedom 
    # Null hypothesis probability =   3.176094e-01
     
    Photon flux (15-150 keV)    in 0.584 sec: 1.31138 ( -0.22246  0.22168 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.95335e-08 ( -1.11812e-08  1.11982e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.08880   ( -0.603461   1.05571 )
    beta        : -10.0000    ( 10   20 )
    Epeak [keV] : 136.398      ( -64.383 -136.583 )
    Norm@50keV   : 1.60578E-02    ( -0.00689125   0.0408876 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.47 using 59 PHA bins.
    # Reduced chi-squared =          1.099 for     55 degrees of freedom 
    # Null hypothesis probability =   2.848610e-01
     
    Photon flux (15-150 keV)    in 0.584 sec: 1.31266 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    

    S(25-50 keV) vs. S(50-100 keV) plot

    S(25-50 keV)  = 1.45e-08
    S(50-100 keV) = 2.13e-08
    

    T90 vs. Hardness ratio plot

    T90                                   = 0.483999967575073 sec.
    Hardness ratio (energy fluence ratio) = 1.46897
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.47906
    Count Ratio (50-100 keV) / (15-25 keV) = 1.27675
    

    Mask shadow pattern

    IMX = 3.173604674822915E-01, IMY = 8.888159855939244E-02
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.064000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.064000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.064000
    

    Spacecraft aspect plot

    Bright source in the pre-burst/pre-slew/post-slew images

    Pre-burst image of 15-350 keV band

    Time interval of the image:
    -239.696000 -56.729700
    -55.696000 -0.020000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    244.9677 -15.6151    0.7  35.9  -38.3   7.4266  16.1    1.6	Sco X-1                       
    254.4581  35.3490    2.2  27.0 -151.1   1.9083   5.2    0.4	Her X-1                       
    268.4651  -1.3801    3.6  41.1  -81.9  -4.0725  -3.2    7.3	SW J1753.5-0127               
    

    Pre-slew background subtracted image of 15-350 keV band

    Time interval of the image:
    -0.020000 0.564000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    244.9489 -15.5614    5.1  35.8  -38.3  -0.0312  -2.3    5.0	Sco X-1                       
    254.5431  35.1566    4.0  26.9 -150.6  -0.0310  -2.9   11.9	Her X-1                       
    268.3604  -1.5086    4.8  41.1  -81.7  -0.1019  -2.4    3.4	SW J1753.5-0127               
    231.4192  -0.5478    1.1  18.2  -15.6   0.1083  10.9 ------	UNKNOWN                       
    224.3979 -39.6231    2.3  57.7   -9.3   0.2432   5.1 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    61.504600 89.004000
    90.304000 962.343900
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    244.9657 -15.6397    0.6  20.2  -58.9  28.2170  20.1    0.8	Sco X-1                       
    254.4100  35.3262    5.0  41.8 -169.4   4.3963   2.3    2.5	Her X-1                       
    255.8106 -37.9736    5.7  43.7  -46.1   6.4040   2.0   11.4	4U 1700-377                   
    256.3756 -36.5519   11.8  42.8  -47.9   2.8104   1.0    8.3	GX 349+2                      
    263.1520 -24.8217   14.1  39.1  -67.2   2.4986   0.8    9.0	GX 1+4                        
    268.5008  -1.5309   16.4  37.1 -106.2   2.2810   0.7    9.2	SW J1753.5-0127               
    262.8464 -33.7479    9.6  44.4  -56.3   6.1543   1.2    8.8	GX 354-0                      
    204.2434  40.0341    3.0  47.5  133.7  19.8473   3.8 ------	UNKNOWN                       
    227.8070 -56.1945    2.3  55.7  -15.6  15.6858   5.1 ------	UNKNOWN                       
    237.3219 -49.3679    2.7  49.1  -23.1  11.0450   4.3 ------	UNKNOWN                       
    
    Plot creation:
    Wed Jan 29 16:52:46 EST 2025