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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1607849573031762 4.1122e-08  
a 2.436796807280506 1.3178e-08 AU
q 2.044996536665394 1.0062e-07 AU
i 1.908468360671179 5.4945e-06 deg
node 216.770067727588 0.00017624 deg
peri 218.9173807476859 0.00017786 deg
M 330.377309820808 2.2326e-05 deg
tp 2457114.827155418018
(2015-Apr-02.32715542)
8.6335e-05 JED
period 1389.400344854463
3.80
1.1271e-05
3.086e-08
d
yr
n .2591045851782262 2.1019e-09 deg/d
Q 2.828597077895619 1.5297e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1199  
   data-arc span      12431 days (34.03 yr)  
   first obs. used      1980-12-07  
   last obs. used      2014-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50587  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:17:48  

Additional Information
 Earth MOID = 1.06018 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 13.6 mag n/a PDS3 (MPC 28115)  

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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