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(2021 CJ)
Classification: Apollo [NEO]          SPK-ID: 54109943
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459253.5 (2021-Feb-08.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5192846778248497 0.0013118  
a 2.08915354120779 0.0058001 au
q 1.004288117635059 4.7636e-05 au
i 13.17280122474547 0.02278 deg
node 135.8761474505614 0.0011822 deg
peri 343.7199185230765 0.0026338 deg
M 5.310172685668795 0.024372 deg
tp 2459237.231028076521
(2021-Jan-22.73102808)
0.006923 TDB
period 1102.945278645829
3.02
4.5931
0.01258
d
yr
n .3263987860231831 0.0013593 deg/d
Q 3.174018964780521 0.0088119 au
  Orbit Determination Parameters
   # obs. used (total)      32  
   data-arc span      8 days  
   first obs. used      2021-02-05  
   last obs. used      2021-02-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .42122  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-27 05:51:14  

Additional Information
 Earth MOID = .0304142 au 
 Jupiter MOID = 1.95084 au 
 T_jup = 3.545 
[ 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 26.23   .31804 E2021-CK0 autocmod 2.8

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2021-Feb-04 06:59 < 00:01 Earth 0.0332514890823233 0.0330438290705886 0.0334591451067699 10.2327026444407 10.2248687596934 2459249.791130580 0.12834387500702 10339.1224287336 23.0128158652146 -0.0249120993949104 310.63358550654 T 5 CATAB v2.0f-lin.ifort 2021-Feb-27 05:51:14 2021-Feb-27 05:51
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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