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29156 (1989 CH)
Classification: Main-belt Asteroid          SPK-ID: 2029156
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2002179267041495 6.5705e-08  
a 2.852341845223469 2.2535e-08 AU
q 2.281251874721338 1.9246e-07 AU
i 16.08294320029781 7.0764e-06 deg
node 136.5193223787786 2.0194e-05 deg
peri 19.25822015800507 2.5261e-05 deg
M 123.3184381385232 1.4092e-05 deg
tp 2456397.765151872591
(2013-Apr-15.26515187)
6.8241e-05 JED
period 1759.54665499517
4.82
2.0852e-05
5.709e-08
d
yr
n .2045981554271366 2.4247e-09 deg/d
Q 3.423431815725599 2.7047e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      895  
   data-arc span      9300 days (25.46 yr)  
   first obs. used      1989-02-03  
   last obs. used      2014-07-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55089  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:47:02  

Additional Information
 Earth MOID = 1.29847 AU 
 T_jup = 3.218 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.1 mag n/a MPO263593  

29156 (1989 CH)          Discovered 1989-Feb-03 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20011002/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1989 CH = 1994 EX3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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