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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2006642198309006 9.1907e-08  
a 2.313976547218052 1.6138e-08 AU
q 1.84964424866354 2.1758e-07 AU
i 7.746838491088671 6.6737e-06 deg
node 125.4580432965992 6.5187e-05 deg
peri 83.9166394023278 6.7483e-05 deg
M 263.9171646851258 1.8952e-05 deg
tp 2457343.646967883920
(2015-Nov-17.14696788)
6.9654e-05 JED
period 1285.691747473729
3.52
1.345e-05
3.682e-08
d
yr
n .2800049084139866 2.9291e-09 deg/d
Q 2.778308845772564 1.9376e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      554  
   data-arc span      8635 days (23.64 yr)  
   first obs. used      1991-05-08  
   last obs. used      2014-12-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60118  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:48:52  

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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