JUST DISCOVERED Asteroid very close to Moon and Earth tomorrow, proximity uncertain

Discovered just today, (2012 KA) is a small Apollo class near-Earth asteroid which will fly closest on May 17:

EARTH — 0.0015 AU / .5 LD
MOON — 0.0035 AU

Condition Code or orbit uncertainty estimate is a 9 on a scale of 0-9, with 0 being good, and 9 being highly uncertain.

JPL Orbit: [link to ssd.jpl.nasa.gov]

Orbital Elements at Epoch 2456063.5 (2012-May-16.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)

 Element Value Uncertainty (1-sigma)   Units 
e .3830282519601095 0.015026  
a 1.457972898854316 0.031582 AU
q .8995280880009339 0.002446 AU
i 18.31631578287269 0.47957 deg
node 56.97233001533192 0.012153 deg
peri 233.5483127806154 0.21138 deg
M 335.101600028288 1.0853 deg
tp 2456107.972499844278
(2012-Jun-29.47249984)
0.49412 JED
period 643.0172204691766
1.76
20.893
0.0572
d
yr
n .5598605893281156 0.018191 deg/d
Q 2.016417709707699 0.043679 AU
Orbit Determination Parameters

   # obs. used (total)      8  
   first obs. used      2012-05-16  
   last obs. used      2012-05-16  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      9  
   fit RMS      .68276  
   data source      ORB  
   producer      Otto Matic  
   solution date      2012-May-16 05:50:02  

Additional Information

 Earth MOID = .0015197 AU 
 T_jup = 4.497 

[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table

Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 28.847 mag .51387 1 autocmod 2.5b

Similar event occurred May 13, small NEO discovered and just before the approach just as close: [link to neo.jpl.nasa.gov]

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