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308831 (2006 RK21)
Classification: Main-belt Asteroid          SPK-ID: 2308831
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1843349626592641 5.531e-08  
a 2.779613895655171 2.1631e-08 au
q 2.267233871992403 1.576e-07 au
i 6.882765126300331 6.9004e-06 deg
node .5655479049421762 4.4687e-05 deg
peri 13.5528593812475 4.8749e-05 deg
M 339.1712134920048 2.0889e-05 deg
tp 2459098.434701918166
(2020-Sep-05.93470192)
9.8899e-05 TDB
period 1692.681072755068
4.63
1.9759e-05
5.41e-08
d
yr
n .2126803482324353 2.4826e-09 deg/d
Q 3.291993919317938 2.5618e-08 au
  Orbit Determination Parameters
   # obs. used (total)      294  
   data-arc span      6114 days (16.74 yr)  
   first obs. used      2001-07-19  
   last obs. used      2018-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53738  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 07:45:15  

Additional Information
 Earth MOID = 1.26843 au 
 Jupiter MOID = 2.18002 au 
 T_jup = 3.298 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO440449  

308831 (2006 RK21)          Discovered 2006-Sep-15 by Spacewatch at Kitt Peak
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

[ show close-approach data ]
Alternate Designations
 2006 RK21 = 2001 PM11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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