batgrbproduct analysis for trigger=819490

batgrbproduct Analysis for Trigger=819490

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed May 30 15:59:15 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger819490
======================================================================

  Trigger: 00819490      Segment: 000

  BAT Trigger Time: 544025324.672   [s; MET]
      Trigger Stop: 544025328.768   [s; MET]
               UTC: 2018-03-29T14:08:23.970940    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 82.9163701340642   Dec: -23.7077603611066  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.87
     Image Trigger?:     NO
     Rate S/N Ratio:     10.9087121146357  [ if not an image trigger ]
     Image S/N Ratio:    6.87

  Flight Position:   [ source = BAT ]
    RA: 82.9163701340642   Dec: -23.7077603611066  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 82.9050662305339   Dec: -23.6948034233854  [deg; J2000]  
        { 05h 31m 37.2s , -23d 41' 41.3" }
         +/- 1.76319016577187 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.830056747870182 [arcmin] (formal 1-sigma fit error)
    SNR: 13.5288986841124
 
  Angular difference between Flight and Ground position is 0.995013 arcmin
 
  Partial Coding Fraction: 0.15625    [ including projection effects ]

  Duration
     T90: 213.536000013351 +/- 49.4225729811666
        Measured from: -5.59200000762939
                   to: 207.944000005722     [s; relative to TRIGTIME]
     T50: 144.111999988556 +/- 3.45922998158195
        Measured from: 4.50399994850159
                   to: 148.615999937057     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.56399989128113     
                   to: 2.56399989128113     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -9.91200006008148     
                   to: 257.159999966621     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.015813   2.559963   1.466491  -0.003475
           0.144241   0.149383   0.127417   0.107463 [error]
 Peak      0.063057   0.051293   0.061948   0.014496
           0.016552   0.017991   0.015675   0.011478 [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 6.89e-07 1.01e-06 1.10e-06 2.23e-06 3.47e-06 5.02e-06   erg/cm2
              Error 7.18e-08 7.07e-08 1.20e-07 4.87e-07 2.82e-07 6.09e-07   erg/cm2
Peak flux Power-law 6.05e-01 4.78e-01 2.54e-01 1.96e-01 1.43e+00 1.53e+00   ph/cm2/s
              Error 2.55e-01 1.43e-01 1.24e-01 1.85e-01 4.25e-01 4.67e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.14e-07 1.12e-06 1.09e-06 5.82e-07 3.21e-06 3.42e-06   erg/cm2
              Error 8.29e-08 9.44e-08 1.39e-07 4.14e-07 3.02e-07 5.09e-07   erg/cm2
Peak flux Cutoff-PL 6.22e-01 4.69e-01 2.50e-01 2.10e-01 1.42e+00 1.53e+00   ph/cm2/s
              Error -------- 2.07e-01 9.56e-02 9.53e-02 5.64e-01 4.64e-01   ph/cm2/s
 
Fluence        Band 6.20e-07 1.11e-06 1.13e-06 7.88e-07 3.26e-06 3.53e-06   erg/cm2
              Error 8.04e-08 9.49e-08 1.40e-07 4.59e-07 3.06e-07 5.22e-07   erg/cm2
Peak flux      Band 6.05e-01 4.77e-01 2.66e-01 1.96e-01 1.37e+00 1.32e+00   ph/cm2/s
              Error 2.55e-01 1.58e-01 1.28e-01 1.69e-01 4.32e-01 5.10e-01   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.877    0.124    -      -           1.41e-03 1.15e-04   65.310 57
CPL   0.897    0.565      50.1    9.7      4.89e-03 3.92e-03   54.310 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.912    0.579    -      -           9.88e-03 3.74e-03   58.840 57
CPL   1.888    1.343     212.6    0.0      1.02e-02 0.00e+00   58.840 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: 158.720000 sec.
T50 in the 50-300 keV band: 78.144000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  267.072   -9.912  257.160
T90   213.536   -5.592  207.944
T50   144.112    4.504  148.616
Peak    1.000    1.564    2.564
  • Click here for the BAT GCN circular template
  • Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

    Image

    Pre-slew 15.0-350.0 keV image (Event data)

    #   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
       82.9051   -23.6948   0.0142    38.5349  -104.8249         3.0996897     13.529 TRIG_00819490                 
     
    Foreground time interval of the image:
     -9.912  35.629 (delta_t =  45.541 [sec])
    Background time interval of the image:
    -239.672  -9.912 (delta_t = 229.760 [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 4.096000
    

    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 4.096000
    

    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 4.096000
    

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

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

    Quad-rate summed light curves (from T0-300s to T0+1000s)

    Spectral Evolution

    Spectra

    Notes:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from   -9.912 sec. to  257.160 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.87738     ( -0.122615   0.126093 )
    Norm@50keV  : 1.41453E-03    ( -0.000115299   0.00011404 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.31 using 59 PHA bins.
    # Reduced chi-squared =          1.146 for     57 degrees of freedom 
    # Null hypothesis probability =   2.102736e-01
     
    Photon flux (15-150 keV)    in 267.1 sec: 0.201091 ( -0.014329  0.014338 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.47388e-06 ( -2.8003e-07  2.83062e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -9.912 sec. to  257.160 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.896890     ( -0.600785   0.529919 )
    Epeak [keV] : 50.1352      ( -7.29119 12.1333 )
    Norm@50keV  : 4.89185E-03    ( -0.00235378   0.00549502 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.31 using 59 PHA bins.
    # Reduced chi-squared =         0.9698 for     56 degrees of freedom 
    # Null hypothesis probability =   5.391783e-01
     
    Photon flux (15-150 keV)    in 267.1 sec: 0.193435 ( -0.014831  0.014848 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.21206e-06 ( -2.97766e-07  3.07053e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from   -9.912 sec. to  257.160 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.896844   ( -0.380636   0.835257 )
    beta        : -10.0000    ( 10   7.10543e-15 )
    Epeak [keV] : 50.1252      ( -7.2917 12.1279 )
    Norm@50keV   : 4.89197E-03    ( -0.00235418   0.00549897 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.31 using 59 PHA bins.
    # Reduced chi-squared =         0.9874 for     55 degrees of freedom 
    # Null hypothesis probability =   5.010434e-01
     
    Photon flux (15-150 keV)    in 267.1 sec: 0.194703 ( -0.016264  0.013771 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.26682e-06 ( -3.59092e-07  2.53352e-07 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 11.5104  (-0.933048  1.01522)
    R^2/D10^2   : 5.63119E-02  (-0.0153644   0.0211103)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          84.91 using 59 PHA bins.
    # Reduced chi-squared =          1.490 for     57 degrees of freedom 
    # Null hypothesis probability =   9.656838e-03
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.196e-07   5.249e-08
    25- 50  1.256e-06   9.549e-08
    50-150  9.721e-07   1.589e-07
    15-150  2.648e-06   2.272e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 83.0174       (-16.8188      24.3508)
    Norm        : 0.938835       (-0.0953543     0.108109)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.88 using 59 PHA bins.
    # Reduced chi-squared =         0.9803 for     57 degrees of freedom 
    # Null hypothesis probability =   5.172023e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.521e-07   6.905e-08
    25- 50  1.083e-06   8.040e-08
    50-150  1.567e-06   5.023e-07
    15-150  3.302e-06   4.581e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 5.52390        (-1.25538      1.4925)
    R1^2/D10^2  : 0.497618        (-0.278344      0.838001)
    kT2 [keV]   : 17.0427        (-2.58032      3.93146)
    R2^2/D10^2  : 9.91082E-03    (-0.00590355   0.0101256)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          52.07 using 59 PHA bins.
    # Reduced chi-squared =         0.9467 for     55 degrees of freedom 
    # Null hypothesis probability =   5.872435e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.303e-07   2.547e-07
    25- 50  1.086e-06   3.244e-07
    50-150  1.465e-06   5.279e-07
    15-150  3.182e-06   9.975e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    1.564 sec. to    2.564 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.91187     ( -0.521688   0.636509 )
    Norm@50keV  : 9.88488E-03    ( -0.00392955   0.00355764 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.84 using 59 PHA bins.
    # Reduced chi-squared =          1.032 for     57 degrees of freedom 
    # Null hypothesis probability =   4.079551e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.42588 ( -0.42526  0.42525 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 9.09055e-08 ( -3.29092e-08  3.38156e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    1.564 sec. to    2.564 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.88843     ( -1.73557   0.951249 )
    Epeak [keV] : 212.647      (   )
    Norm@50keV  : 1.01549E-02    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.84 using 59 PHA bins.
    # Reduced chi-squared =          1.051 for     56 degrees of freedom 
    # Null hypothesis probability =   3.717839e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.42220 ( -0.699479  0.42895 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    
    Band function
    Time interval is from    1.564 sec. to    2.564 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -5.22460   ( 5.2246   5.2246 )
    beta        : -1.91187    ( -0.636508   0.521662 )
    Epeak [keV] : 67.9036      ( -67.9036 -67.9036 )
    Norm@50keV   : 1.34349    ( -0.534081   0.483538 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.84 using 59 PHA bins.
    # Reduced chi-squared =          1.070 for     55 degrees of freedom 
    # Null hypothesis probability =   3.368155e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.37449 ( -0.379264  0.48409 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 9.09055e-08 ( -3.29092e-08  3.38156e-08 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 7.40496  (-2.84862  14.8436)
    R^2/D10^2   : 1.96839  (-1.90259   12.0189)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.86 using 59 PHA bins.
    # Reduced chi-squared =          1.155 for     57 degrees of freedom 
    # Null hypothesis probability =   1.971407e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.831e-08   1.165e-08
    25- 50  2.790e-08   1.735e-08
    50-150  5.643e-09   4.631e-09
    15-150  5.186e-08   3.373e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 92.4427       (-58.9264      -92.4475)
    Norm        : 6.43198       (-2.28194     4.11541)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.36 using 59 PHA bins.
    # Reduced chi-squared =          1.041 for     57 degrees of freedom 
    # Null hypothesis probability =   3.895988e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.679e-08   1.065e-08
    25- 50  2.857e-08   1.759e-08
    50-150  4.422e-08   3.627e-08
    15-150  8.959e-08   6.205e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 4.63943        (-2.1432      2.58987)
    R1^2/D10^2  : 10.0651        (-8.50385      21.6011)
    kT2 [keV]   : 22.7554        (-8.80856      25.5147)
    R2^2/D10^2  : 2.60381E-02    (-0.023398   0.0550805)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          57.09 using 59 PHA bins.
    # Reduced chi-squared =          1.038 for     55 degrees of freedom 
    # Null hypothesis probability =   3.974476e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.042e-08   1.304e-08
    25- 50  2.296e-08   1.194e-08
    50-150  5.152e-08   3.556e-08
    15-150  9.489e-08   5.330e-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: 2.01048     ( -0.171823   0.181613 )
    Norm@50keV  : 4.37840E-03    ( -0.000518696   0.000507829 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.69 using 59 PHA bins.
    # Reduced chi-squared =         0.9419 for     57 degrees of freedom 
    # Null hypothesis probability =   6.000606e-01
     
    Photon flux (15-150 keV)    in 45.54 sec: 0.659947 ( -0.0638496  0.0638933 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.83983e-06 ( -2.03884e-07  2.06661e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.25550     ( -0.769944   0.667259 )
    Epeak [keV] : 44.7323      ( -22.6146 21.8123 )
    Norm@50keV  : 1.13078E-02    ( -0.00630352   0.0179286 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.85 using 59 PHA bins.
    # Reduced chi-squared =         0.8902 for     56 degrees of freedom 
    # Null hypothesis probability =   7.053884e-01
     
    Photon flux (15-150 keV)    in 45.54 sec: 0.641599 ( -0.065681  0.065732 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.75391e-06 ( -2.106e-07  2.17522e-07 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.25824   ( -0.774936   0.679748 )
    beta        : -10.0000    ( 10   1.06581e-14 )
    Epeak [keV] : 44.7987      ( -22.7391 21.7693 )
    Norm@50keV   : 1.12557E-02    ( -0.00625098   0.0180452 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.85 using 59 PHA bins.
    # Reduced chi-squared =         0.9064 for     55 degrees of freedom 
    # Null hypothesis probability =   6.710527e-01
     
    Photon flux (15-150 keV)    in 45.54 sec: 0.649045 ( -0.07402  0.06119 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.80473e-06 ( -2.67558e-07  1.74894e-07 ) ergs/cm2
     
    

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

    S(25-50 keV)  = 1.01e-06
    S(50-100 keV) = 1.10e-06
    

    T90 vs. Hardness ratio plot

    T90                                   = 213.536000013351 sec.
    Hardness ratio (energy fluence ratio) = 1.08911
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.26994
    Count Ratio (50-100 keV) / (15-25 keV) = 0.727494
    

    Mask shadow pattern

    IMX = -2.037799709813925E-01, IMY = 7.699208746149095E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 4.096000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 4.096000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 4.096000
    

    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:
    -239.672000 -9.912000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     83.6273  22.0139    1.1  49.9  -38.9   7.4269  11.0    0.3	Crab                          
    135.5308 -40.5748    2.3  31.7  168.4   1.2620   5.0    1.2	Vela X-1                      
     93.8875 -27.1514    3.3  30.2 -116.3   0.9604   3.5 ------	UNKNOWN                       
     79.7215 -15.7477    3.3  40.7  -91.9   3.2498   3.5 ------	UNKNOWN                       
     79.6753  -7.5188    2.9  41.3  -79.4   3.2329   4.0 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -9.912000 35.628590
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     83.5520  21.9614    5.7  49.9  -39.0   0.5478   2.0    5.5	Crab                          
    135.6066 -40.5517    5.5  31.7  168.2   0.2169   2.1    3.6	Vela X-1                      
    115.6706  37.2019    2.7  48.9    3.0   0.7546   4.3 ------	UNKNOWN                       
     82.9066 -23.6960    0.9  38.5 -104.8   3.1072  13.6 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    93.028590 962.448000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     83.6377  22.0226    0.3  45.7   -8.4  34.0352  34.7    0.5	Crab                          
     49.0902 -66.5127    2.7  47.8 -171.8   5.7780   4.3 ------	UNKNOWN                       
     74.7483  35.3785    3.6  59.6  -17.0  10.5735   3.2 ------	UNKNOWN                       
     67.0108  18.6457    3.9  45.1  -30.8   2.9293   3.0 ------	UNKNOWN                       
     28.6339 -37.3916    3.3  48.1 -129.1  10.0603   3.4 ------	UNKNOWN                       
    
    Plot creation:
    Wed May 30 17:14:01 EDT 2018