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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2006642239107227 9.3935e-08  
a 2.31397654726032 1.6147e-08 AU
q 1.849644239256714 2.2208e-07 AU
i 7.746838096083636 6.7182e-06 deg
node 125.4580374922491 6.625e-05 deg
peri 83.9166444161647 6.8585e-05 deg
M 263.9171651323486 1.907e-05 deg
tp 2457343.646966296126
(2015-Nov-17.14696630)
7.005e-05 JED
period 1285.691747508956
3.52
1.3457e-05
3.684e-08
d
yr
n .2800049084063146 2.9307e-09 deg/d
Q 2.778308855263925 1.9387e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      546  
   data-arc span      8297 days (22.72 yr)  
   first obs. used      1991-05-08  
   last obs. used      2014-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60375  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 22:53:44  

Additional Information
 Earth MOID = .8657 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 15.2 mag n/a MPO270281  

21063 (1991 JC2)          Discovered 1991-May-08 by McNaught, R. H. at Siding Spring (413)
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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