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146876 (2002 BK21)
Classification: Inner Main-belt Asteroid          SPK-ID: 2146876
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06143461526564593 6.2214e-08  
a 1.895057552129055 8.7782e-09 au
q 1.778635420507749 1.1915e-07 au
i 21.99938198794037 7.8055e-06 deg
node 34.57919299415005 1.3841e-05 deg
peri 120.8029107296133 5.2468e-05 deg
M 354.1779589009894 5.2328e-05 deg
tp 2459015.910076644932
(2020-Jun-15.41007664)
0.00013854 TDB
period 952.8664428559614
2.61
6.6208e-06
1.813e-08
d
yr
n .3778074070076354 2.6251e-09 deg/d
Q 2.01147968375036 9.3175e-09 au
  Orbit Determination Parameters
   # obs. used (total)      459  
   data-arc span      7763 days (21.25 yr)  
   first obs. used      1998-10-29  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59564  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 08:40:00  

Additional Information
 Earth MOID = .815997 au 
 Jupiter MOID = 2.99042 au 
 T_jup = 3.863 
[ 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 16.5   n/a MPO345205  

146876 (2002 BK21)          Discovered 2002-Jan-25 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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