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12256 (1989 CJ8)
Classification: Main-belt Asteroid          SPK-ID: 2012256
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1976119956823531 2.9573e-08  
a 2.463968935706904 8.0177e-09 au
q 1.977059117022539 7.5193e-08 au
i 8.651167938568987 3.9845e-06 deg
node 144.9225408234672 1.9432e-05 deg
peri 66.51471209029583 2.2119e-05 deg
M 344.095085195289 1.1005e-05 deg
tp 2459062.913726788141
(2020-Aug-01.41372679)
4.327e-05 TDB
period 1412.70430678921
3.87
6.8953e-06
1.888e-08
d
yr
n .2548303974652749 1.2438e-09 deg/d
Q 2.950878754391269 9.6021e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2297  
   data-arc span      11452 days (31.35 yr)  
   first obs. used      1989-02-08  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44972  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:25:29  

Additional Information
 Earth MOID = .991168 au 
 Jupiter MOID = 2.05507 au 
 T_jup = 3.446 
[ 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 13.8   n/a MPO502262  
diameter diameter 3.854 km 0.556 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.569   0.209 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12256 (1989 CJ8)          Discovered 1989-Feb-08 by Debehogne, H. at La Silla
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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