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Post Info TOPIC: Asteroid 2009 BF58
Blobrana


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RE: Asteroid 2009 BF58
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2009 BF58
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -5.32
Palermo Scale (cumulative) -5.11
Impact Probability (cumulative) 1.9e-04
Number of Potential Impacts 21
Vimpact 12.99 km/s
Vinfinity 6.68 km/s
H 27.2
Diameter 0.012 km
Mass 2.4e+06 kg
Energy 4.8e-02 MT
all above are mean values
weighted by impact probability
Analysis based on
56 observations spanning 28.173 days
(2009-Jan-28.26267 to 2009-Feb-25.43554)



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Blobrana


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Keplerian elements at epoch
54800.0 MJD

Value 1- variation Units
a 1.49346 0.001532 AU
e 0.371194 0.0006815
i 0.976 0.001496 deg
303.495 0.0008866 deg
w 143.914 0.00228 deg
M 346.399 0.01576 deg
Other useful info
Absolute Magnitude (H)    27.3 mag
Slope parameter (G)    0.15 mag
Perihelion 0.9391 AU
Aphelion 2.0478 AU
Asc. node-Earth separation 0.8213 AU
Desc. node-Earth separation 0.00637 AU
Earth MOID 0.00068 AU
Orbital period 666.637 days
Date of orbit computation   Feb 12 08:22
Source

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Blobrana


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Keplerian elements at epoch
54800.0 MJD

Value 1-sigma variation Units
a 1.49369 0.001576 AU
e 0.371294 0.0007007
i 0.976 0.001538 deg
303.495 0.000907 deg
w 143.914 0.002318 deg
M 346.402 0.01621 deg
Other useful info
Absolute Magnitud (H)    27.3 mag
Slope parameter (G)    0.15 mag
Perihelion 0.9391 AU
Aphelion 2.0483 AU
Asc. node-Earth separation 0.82163 AU
Desc. node-Earth separation 0.00637 AU
Earth MOID 0.00068 AU
Orbital period 666.787 days
Date of orbit computation   Feb 6 09:50

Source

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Blobrana


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2009BF58 - impactor table 
Object: 2009BF58  

     date         MJD       sigma sigimp   dist ±   width    stretch    p_RE    exp. en.    PS  
   YYYY/MM                                 (RE)       (RE)      RE/sig               MT           
--------------------------------------------------------------------------------------------------
2055/01/22.027  71654.027   0.330 0.000    1.90 ±    0.000  5.88E+06  5.71E-08  2.43E-09  -8.48
2057/01/21.864  72384.864  -1.709 0.000    0.26 ±    0.004  1.00E+04  3.62E-05  1.51E-06  -5.70
2066/01/21.963  75671.963  -1.424 0.000    0.10 ±    0.000  3.30E+06  1.72E-07  7.21E-09  -8.10
Based on   38 optical observations (of which   0 are rejected as outliers)
from 2009/01/28.263 to 2009/02/01.210
Source


-- Edited by Blobrana at 14:17, 2009-02-04

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Blobrana


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Orbital elements:
2009 BF58                                                Earth MOID = 0.0007 AU
Epoch 2008 Nov. 30.0 TT = JDT 2454800.5                 MPC
M 346.39065              (2000.0)            P               Q
n   0.54048039     Peri.  143.91268     +0.04514562     -0.99887957
a   1.4926206      Node   303.49570     +0.91251247     +0.04701629
e   0.3708210      Incl.    0.97528     +0.40654995     +0.00539192
P   1.82           H   27.3           G   0.15           U   7
MPEC 2009 -B77

-- Edited by Blobrana at 14:16, 2009-02-04

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