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21063 (1991 JC2)
Classification: Main-belt Asteroid          SPK-ID: 2021063
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .200275956121832 8.2665e-08  
a 2.313926017881499 1.6152e-08 au
q 1.850502272255099 1.9708e-07 au
i 7.746006549827225 6.5189e-06 deg
node 125.4540895722335 5.9508e-05 deg
peri 83.83445517230558 6.176e-05 deg
M 15.95791451450039 1.9176e-05 deg
tp 2457343.510313968071
(2015-Nov-17.01031397)
6.8129e-05 JED
period 1285.649635035446
3.52
1.3461e-05
3.685e-08
d
yr
n .2800140801891757 2.9318e-09 deg/d
Q 2.7773497635079 1.9386e-08 au
  Orbit Determination Parameters
   # obs. used (total)      640  
   data-arc span      8776 days (24.03 yr)  
   first obs. used      1991-05-08  
   last obs. used      2015-05-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56566  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:38:37  

Additional Information
 Earth MOID = .864786 au 
 Jupiter MOID = 2.22253 au 
 T_jup = 3.543 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3 mag n/a MPO337436  

21063 (1991 JC2)          Discovered 1991-May-08 by McNaught, R. H. at Siding Spring
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 JC2 = 1998 HZ121 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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