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(2021 HE)
Classification: Amor [NEO]          SPK-ID: 54138309
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3266204021394887 8.1438e-05  
a 1.515846259150205 0.00019291 au
q 1.020739944404925 6.4566e-06 au
i 17.84104987765941 0.0031057 deg
node 212.9120686021038 0.00058878 deg
peri 49.08260577558772 0.0015292 deg
M 265.895944571436 0.019068 deg
tp 2459378.691506849502
(2021-Jun-13.19150685)
0.0020914 TDB
period 681.6809559766225
1.87
0.13013
0.0003563
d
yr
n .5281062890839301 0.00010081 deg/d
Q 2.010952573895485 0.00025591 au
  Orbit Determination Parameters
   # obs. used (total)      72  
   data-arc span      44 days  
   first obs. used      2021-04-16  
   last obs. used      2021-05-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .45016  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-30 05:59:21  

Additional Information
 Earth MOID = .0896218 au 
 Jupiter MOID = 3.10093 au 
 T_jup = 4.404 
[ 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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