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(2021 CP9)
Classification: Aten [NEO]          SPK-ID: 54122196
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459262.5 (2021-Feb-17.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3096898871588863 0.0006682  
a .7760575582605364 0.00033755 au
q .53572038061403 0.00075157 au
i 14.85409168180579 0.050688 deg
node 332.0600396415377 0.0014154 deg
peri 5.731892830235935 0.0027198 deg
M 163.5001064760085 0.012139 deg
tp 2459149.089082109097
(2020-Oct-26.58908211)
0.082387 TDB
period 249.7119501675434
0.68
0.16292
0.0004461
d
yr
n 1.441661080931286 0.00094058 deg/d
Q 1.016394735907043 0.00044208 au
  Orbit Determination Parameters
   # obs. used (total)      26  
   data-arc span      6 days  
   first obs. used      2021-02-15  
   last obs. used      2021-02-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .55528  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-23 05:19:51  

Additional Information
 Earth MOID = .0249809 au 
 Jupiter MOID = 4.3281 au 
 T_jup = 7.415 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 27.00   .47803 E2021D90 autocmod 2.8

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