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201918 (2004 CA4)
Classification: Main-belt Asteroid          SPK-ID: 2201918
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2007048565035403 4.779e-08  
a 3.115285078496953 2.485e-08 au
q 2.490032233849602 1.5648e-07 au
i 10.40895388813461 4.9262e-06 deg
node 118.0046447819498 2.524e-05 deg
peri 312.9148164033501 2.8819e-05 deg
M 32.17063883267276 1.1652e-05 deg
tp 2458821.025685368913
(2019-Dec-03.52568537)
6.4941e-05 TDB
period 2008.376445467785
5.50
2.4031e-05
6.579e-08
d
yr
n .1792492641568249 2.1448e-09 deg/d
Q 3.740537923144305 2.9838e-08 au
  Orbit Determination Parameters
   # obs. used (total)      582  
   data-arc span      7197 days (19.70 yr)  
   first obs. used      2000-06-05  
   last obs. used      2020-02-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49637  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 05:03:03  

Additional Information
 Earth MOID = 1.51856 au 
 Jupiter MOID = 1.59519 au 
 T_jup = 3.161 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO454431  

201918 (2004 CA4)          Discovered 2004-Feb-10 by NEAT at Palomar
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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