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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2006642012565948 8.2505e-08  
a 2.313976546754107 1.6081e-08 AU
q 1.849644291273201 1.9683e-07 AU
i 7.746839485544375 6.5192e-06 deg
node 125.4580579639033 5.9496e-05 deg
peri 83.91662824586437 6.1744e-05 deg
M 263.9171627216567 1.849e-05 deg
tp 2457343.646974792987
(2015-Nov-17.14697479)
6.8102e-05 JED
period 1285.691747087064
3.52
1.3402e-05
3.669e-08
d
yr
n .2800049084981967 2.9188e-09 deg/d
Q 2.778308802235013 1.9308e-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 = .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 15.3 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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