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(2021 CT4)
Classification: Apollo [NEO]          SPK-ID: 54114197
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4689122241503646 0.00023617  
a 1.739203800876131 0.00074011 au
q .9236698783565365 1.7701e-05 au
i 7.191917103082506 0.0026905 deg
node 155.5685023886836 0.0010989 deg
peri 56.99164857491451 0.00073949 deg
M 311.2071262970915 0.03285 deg
tp 2459314.047620329715
(2021-Apr-09.54762033)
0.0039685 TDB
period 837.768719415695
2.29
0.53476
0.001464
d
yr
n .4297128690255747 0.00027429 deg/d
Q 2.554737723395725 0.0010872 au
  Orbit Determination Parameters
   # obs. used (total)      61  
   data-arc span      27 days  
   first obs. used      2021-02-08  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .35562  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:25:11  

Additional Information
 Earth MOID = .0345153 au 
 Jupiter MOID = 2.42767 au 
 T_jup = 4.005 
[ 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 23.32   .4421 E2021-DA1 autocmod 2.8

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