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(2021 CR2)
Classification: Apollo [NEO]          SPK-ID: 54110693
[ 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 2459254.5 (2021-Feb-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2821790396985227 0.00076929  
a 1.274229504305151 0.0013457 au
q .9146686464247992 1.4468e-05 au
i 24.06524888676042 0.039703 deg
node 138.7699442008976 0.0012391 deg
peri 56.0840270415421 0.0469 deg
M 329.0842861043905 0.085168 deg
tp 2459299.617672848976
(2021-Mar-26.11767285)		 0.052819 TDB
period 525.3756157944663
1.44		 0.83228
0.002279		 d
yr
n .6852240362461677 0.0010855 deg/d
Q 1.633790362185503 0.0017255 au
   Orbit Determination Parameters
   # obs. used (total)      36  
   data-arc span      5 days  
   first obs. used      2021-02-06  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .5247  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:25:01  

Additional Information
 Earth MOID = .0238666 au 
 Jupiter MOID = 3.42147 au 
 T_jup = 4.951 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 5.918146931931355E-7 -1.098088755568442E-8 -4.063144142880687E-5 9.53252623436511E-7 -3.607539335872569E-5 3.054353270410807E-5
q -1.098088755568442E-8 2.093342212503316E-10 7.525968813854095E-7 -1.769320098636984E-8 6.675583054144722E-7 -5.66695516218069E-7
tp -4.063144142880687E-5 7.525968813854095E-7 .002789883953693377 -6.544476647863205E-5 .002477202730043607 -.002096991776254464
node 9.53252623436511E-7 -1.769320098636984E-8 -6.544476647863205E-5 1.535479982730467E-6 -5.810570427975377E-5 4.919769466311418E-5
peri -3.607539335872569E-5 6.675583054144722E-7 .002477202730043607 -5.810570427975377E-5 .002199641257759519 -.001861856803934086
i 3.054353270410807E-5 -5.66695516218069E-7 -.002096991776254464 4.919769466311418E-5 -.001861856803934086 .001576361143110827

[ 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 24.66   .56452 E2021-CK0 autocmod 2.8

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