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

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2008354692936634 4.24e-08  
a 2.313338617871747 6.6325e-09 au
q 1.84873817091632 9.8878e-08 au
i 7.748528434192053 3.3161e-06 deg
node 125.4292135672179 3.3588e-05 deg
peri 83.86822039841083 3.4369e-05 deg
M 159.8679522671347 8.9612e-06 deg
tp 2458629.789122610608
(2019-May-26.28912261)
3.0867e-05 TDB
period 1285.160114623037
3.52
5.5269e-06
1.513e-08
d
yr
n .2801207381895719 1.2047e-09 deg/d
Q 2.777939064827174 7.9645e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1398  
   data-arc span      10836 days (29.67 yr)  
   first obs. used      1991-05-08  
   last obs. used      2021-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51376  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:50:43  

Additional Information
 Earth MOID = .862549 au 
 Jupiter MOID = 2.2208 au 
 T_jup = 3.544 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.37   n/a E2021B10  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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