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Post Info TOPIC: Asteroid 2009 EW
Blobrana


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RE: Asteroid 2009 EW
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2009 EW
Earth Impact Risk Summary
Torino Scale (maximum) 0
Palermo Scale (maximum) -7.06
Palermo Scale (cumulative) -7.06
Impact Probability (cumulative) 4.9e-07
Number of Potential Impacts 1
Vimpact 17.00 km/s
Vinfinity 12.83 km/s
H 26.4
Diameter 0.018 km
Mass 7.9e+06 kg
Energy 2.7e-01 MT
all above are mean values
weighted by impact probability
Analysis based on
53 observations spanning 3.8331 days
(2009-Mar-02.29194 to 2009-Mar-06.124991)
Source

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Blobrana


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Orbital elements:
2009 EW                                                  Earth MOID = 0.0022 AU
Epoch 2008 Nov. 30.0 TT = JDT 2454800.5                 MPC
M 252.67557              (2000.0)            P               Q
n   0.70796763     Peri.  259.41335     -0.41191552     +0.91015297
a   1.2467914      Node   346.01015     -0.74829194     -0.36550063
e   0.3885311      Incl.   10.51721     -0.51998536     -0.19501502
P   1.39           H   26.3           G   0.15           U   7

MPEC 2009 - E23

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Blobrana


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Orbital Elements at Epoch 2455000.5 (2009-Jun-18.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
Element Value Uncertainty (1-sigma) Units
e .3890627968269 8.8533e-05
a 1.257477435258296 0.00012144 AU
q .7682397473499862 3.7142e-05 AU
i 10.71599945542482 0.0020326 deg
node 345.9622780144769 5.8149e-06 deg
peri 258.1642202056711 0.00014941 deg
M 34.26889513348782 0.0023722 deg
tp 2454951.471757042044
(2009-Apr-29.97175705)		 0.0037089 JED
period 515.0492128827403
1.41		 0.074613
0.0002043		 d
yr
n .6989623340749772 0.00010126 deg/d
Q 1.746715123166606 0.00016869 AU
 Orbit Determination Parameters
# obs. used (total) 53
data-arc span 4 days
first obs. used 2009-03-02
last obs. used 2009-03-06
planetary ephem. DE405
SB-pert. ephem. SB405-CPV-2
quality code 6
fit RMS .5533
data source ORB
producer Otto Matic
solution date 2009-Mar-07 07:50:16

Additional Information
Earth MOID = .00187265 AU
T_jup = 5.028
Source

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