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JPL Small-Body Database Browser
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442227 (2011 KA31)
Classification: Main-belt Asteroid          SPK-ID: 2442227
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1824253002387867 5.2137e-08  
a 2.361134399926514 2.1514e-08 au
q 1.930403748115793 1.2278e-07 au
i 2.301055544545399 5.9806e-06 deg
node 108.2273914809268 0.00022548 deg
peri 182.5297685648969 0.00022701 deg
M 32.77770728801085 2.7623e-05 deg
tp 2458479.842155780425
(2018-Dec-27.34215578)
0.00010087 TDB
period 1325.194088084833
3.63
1.8112e-05
4.959e-08
d
yr
n .2716583202693509 3.7129e-09 deg/d
Q 2.791865051737236 2.5439e-08 au
  Orbit Determination Parameters
   # obs. used (total)      108  
   data-arc span      5575 days (15.26 yr)  
   first obs. used      2004-07-21  
   last obs. used      2019-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57711  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 15:59:49  

Additional Information
 Earth MOID = .91348 au 
 Jupiter MOID = 2.38242 au 
 T_jup = 3.527 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.9   n/a MPO446754  

442227 (2011 KA31)          Discovered 2004-Jul-21 by Siding Spring Survey at Siding Spring
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 KA31 = 2008 SA278 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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