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(2021 AP2)
Classification: Apollo [NEO]          SPK-ID: 54104847
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7074599228020009 0.00032851  
a 2.23345564337034 0.0019788 au
q .6533752863298661 0.00015616 au
i 7.450312350766801 0.0029666 deg
node 324.941750952464 0.007709 deg
peri 225.3005774339319 0.009566 deg
M 333.3319260270559 0.036498 deg
tp 2459290.813687505064
(2021-Mar-17.31368751)
0.0036376 TDB
period 1219.170440835314
3.34
1.6202
0.004436
d
yr
n .2952827495992654 0.00039242 deg/d
Q 3.813536000410814 0.0033787 au
  Orbit Determination Parameters
   # obs. used (total)      52  
   data-arc span      31 days  
   first obs. used      2021-01-06  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .37763  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:22:36  

Additional Information
 Earth MOID = .0693433 au 
 Jupiter MOID = 1.24376 au 
 T_jup = 3.248 
[ 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 20.6   .37939 E2021D54 autocmod 2.8

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