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Post Info TOPIC: Asteroid 2009 BR5
Blobrana


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RE: Asteroid 2009 BR5
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2009 BR5
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -5.24
Palermo Scale (cumulative) -5.00
Impact Probability (cumulative) 3.1e-07
Number of Potential Impacts 3
Vimpact 21.26 km/s
Vinfinity 18.10 km/s
H 22.1
Diameter 0.130 km
Mass 2.9e+09 kg
Energy 1.5e+02 MT
all above are mean values
weighted by impact probability
Analysis based on
34 observations spanning 10.855 days
(2009-Jan-20.45513 to 2009-Jan-31.3098)



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Blobrana


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2009BR5 - impactor table
Object: 2009BR5   

     date         MJD       sigma sigimp   dist ±   width    stretch    p_RE    exp. en.    PS  
   YYYY/MM                                 (RE)       (RE)      RE/sig               MT           
--------------------------------------------------------------------------------------------------
2059/07/21.281  73295.281  -2.171 0.000    1.17 ±    0.105  8.60E+04  1.82E-07  2.79E-05  -5.17
2065/07/20.629  75486.629  -1.469 1.229    1.30 ±    0.105  2.40E+06  3.74E-09  5.67E-07  -6.91
2078/07/19.278  80233.278  -0.267 0.000    0.70 ±    0.127  5.01E+06  1.45E-07  2.24E-05  -5.41

Based on   34 optical observations (of which   0 are rejected as outliers)
from 2009/01/20.456 to 2009/01/31.311.
Source


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Blobrana


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2009BR5 - impactor table
Object: 2009BR5   

     date         MJD       sigma sigimp   dist ±   width    stretch    p_RE    exp. en.    PS  
   YYYY/MM                                 (RE)       (RE)      RE/sig               MT           
--------------------------------------------------------------------------------------------------
2059/07/21.290  73295.290  -1.301 0.000    1.09 ±    0.200  1.24E+05  1.57E-06  2.49E-04  -4.22
2063/07/21.048  74756.048  -2.703 0.000    0.61 ±    0.202  6.70E+04  3.33E-07  5.00E-05  -4.95
2065/07/20.633  75486.633  -0.815 1.281    1.42 ±    0.195  3.51E+06  3.93E-09  6.20E-07  -6.88
2066/07/20.534  75851.534  -2.461 0.000    1.14 ±    0.195  3.42E+06  5.38E-09  8.13E-07  -6.76
2066/07/19.950  75850.950  -0.310 0.397    1.28 ±    0.253  1.39E+07  7.61E-09  1.22E-06  -6.59
2075/07/19.653  79137.653   0.190 0.000    0.65 ±    0.000  3.14E+08  2.45E-09  3.98E-07  -7.14
2078/07/19.278  80233.278   0.015 0.000    0.70 ±    0.219  7.26E+06  1.00E-07  1.61E-05  -5.55
2081/07/19.905  81329.905  -2.107 0.000    0.55 ±    0.506  4.30E+07  1.77E-09  2.68E-07  -7.35

Based on   31 optical observations (of which   0 are rejected as outliers)
from 2009/01/20.456 to 2009/01/29.348
Source

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Blobrana


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Posts: 131433
Date:
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2009BR5 - impactor table

Updated:

Based on   26 optical observations (of which   0 are rejected as outliers)
from 2009/01/20.456 to 2009/01/27.415.

Read more 


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Blobrana


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Posts: 131433
Date:
Permalink  
 

2009BR5 - impactor table

Updated:

Based on   15 optical observations (of which   0 are rejected as outliers)
from 2009/01/20.456 to 2009/01/25.308.

Read more 

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Blobrana


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2009BR5 - impactor table 
Object: 2009BR5   

     date         MJD       sigma sigimp   dist ±   width    stretch    p_RE    exp. en.    PS  
   YYYY/MM                                 (RE)       (RE)      RE/sig               MT           
--------------------------------------------------------------------------------------------------
2025/07/19.928  60875.928   0.919 0.652    4.25 ±    4.731  1.96E+05  2.94E-07  5.40E-05  -4.42
2031/07/21.686  63068.686   0.687 1.084    5.71 ±    4.200  2.33E+05  1.72E-07  3.07E-05  -4.79
2034/07/21.339  64164.339   0.616 1.921    9.12 ±    4.144  4.58E+05  1.45E-08  2.58E-06  -5.92
2038/07/19.674  65623.674   0.921 2.103   11.02 ±    4.691  2.47E+06  1.36E-09  2.50E-07  -7.00
2038/07/19.577  65623.577   0.937 2.449   12.78 ±    4.744  3.86E+05  3.33E-09  6.13E-07  -6.61
2041/07/19.872  66719.872   0.851 0.844    5.03 ±    4.590  3.50E+05  1.36E-07  2.49E-05  -5.05
2048/07/21.034  69278.034  -2.118 0.595    3.66 ±    4.158  2.05E+07  5.05E-10  6.56E-08  -7.68
2048/07/21.038  69278.038  -2.115 1.036    5.27 ±    3.953  4.09E+06  1.47E-09  1.91E-07  -7.21
2048/07/21.009  69278.009  -2.018 1.329    6.53 ±    4.023  2.75E+05  1.68E-08  2.20E-06  -6.15
2048/07/21.031  69278.031  -1.973 0.854    4.68 ±    4.092  1.10E+07  9.25E-10  1.22E-07  -7.41
2049/07/17.725  69639.725   1.264 0.152    1.97 ±    5.266  1.38E+06  3.84E-08  7.34E-06  -5.67

Based on   12 optical observations (of which   0 are rejected as outliers)
from 2009/01/20.456 to 2009/01/23.998
Source

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Blobrana


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Posts: 131433
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2009 BR5
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -5.29
Palermo Scale (cumulative) -4.35
Impact Probability (cumulative) 6.4e-07
Number of Potential Impacts 155
Vimpact 21.83 km/s
Vinfinity 18.77 km/s
H 22.1
Diameter 0.130 km
Mass 2.9e+09 kg
Energy 1.6e+02 MT
all above are mean values
weighted by impact probability
Analysis based on
10 observations spanning 1.0130 days
(2009-Jan-20.45513 to 2009-Jan-21.46817)

Source

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Blobrana


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Orbital elements:
2009 BR5                                                 Earth MOID = 0.0049 AU
Epoch 2008 Nov. 30.0 TT = JDT 2454800.5                 MPC
M 323.32345              (2000.0)            P               Q
n   0.32401183     Peri.  277.14432     -0.78487306     +0.61689677
a   2.0994013      Node   300.96360     -0.53824218     -0.72542726
e   0.6722512      Incl.    3.90638     -0.30703361     -0.30527637
P   3.04           H   22.1           G   0.15           U   8
MPEC 2009 -B36

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