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(2021 HE)
Classification: Amor [NEO]          SPK-ID: 54138309
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3266972192779546 0.00023853  
a 1.516029463303398 0.00056445 au
q 1.020746853298728 1.8462e-05 au
i 17.84414520653232 0.0091631 deg
node 212.9114672150259 0.0017417 deg
peri 49.08120869521697 0.0042602 deg
M 265.9139963219394 0.055674 deg
tp 2459378.689623745561
(2021-Jun-13.18962375)
0.0059256 TDB
period 681.8045409591599
1.87
0.38078
0.001043
d
yr
n .52801056369257 0.00029489 deg/d
Q 2.011312073308068 0.00074886 au
  Orbit Determination Parameters
   # obs. used (total)      66  
   data-arc span      21 days  
   first obs. used      2021-04-16  
   last obs. used      2021-05-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .43664  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-07 05:55:23  

Additional Information
 Earth MOID = .0896391 au 
 Jupiter MOID = 3.10061 au 
 T_jup = 4.403 
[ 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 23.26   .33424 E2021J33 autocmod 2.9c

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