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6638 (1989 CA)
Classification: Main-belt Asteroid          SPK-ID: 2006638
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1615688402182309 3.639e-08  
a 2.437017535859749 1.1043e-08 au
q 2.043271438999399 8.7432e-08 au
i 1.910410336084348 5.2604e-06 deg
node 216.7032824622066 0.00014807 deg
peri 218.9552921581669 0.00014972 deg
M 125.7825277886658 2.082e-05 deg
tp 2457114.983240680274
(2015-Apr-02.48324068)
7.962e-05 JED
period 1389.589129968585
3.80
9.4452e-06
2.586e-08
d
yr
n .2590693840618477 1.7609e-09 deg/d
Q 2.8307636327201 1.2827e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1614  
   data-arc span      12914 days (35.36 yr)  
   first obs. used      1980-12-07  
   last obs. used      2016-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47572  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:56:29  

Additional Information
 Earth MOID = 1.05716 au 
 Jupiter MOID = 2.42827 au 
 T_jup = 3.485 
[ 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 13.7 mag n/a MPO358695  

6638 (1989 CA)          Discovered 1989-Feb-02 by Arai, M., Mori, H. at Yorii
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1989 CA = 1980 XV 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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