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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2006642069226637 8.4647e-08  
a 2.31397654698381 1.611e-08 AU
q 1.84964427834566 2.0149e-07 AU
i 7.74683956821273 6.5386e-06 deg
node 125.4580603846043 6.1041e-05 deg
peri 83.91662483432609 6.3253e-05 deg
M 263.9171632624544 1.8546e-05 deg
tp 2457343.646972912696
(2015-Nov-17.14697291)
6.8287e-05 JED
period 1285.691747278506
3.52
1.3427e-05
3.676e-08
d
yr
n .2800049084565035 2.9241e-09 deg/d
Q 2.778308815621961 1.9343e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      577  
   data-arc span      8656 days (23.70 yr)  
   first obs. used      1991-05-08  
   last obs. used      2015-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59415  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:58:34  

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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