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(2021 DE)
Classification: Apollo [NEO]          SPK-ID: 54122968
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7598379518836347 1.5093e-06  
a 1.390434304582563 4.5992e-06 au
q .3339295503598024 1.101e-06 au
i 4.743369038155484 3.459e-05 deg
node 337.2881297145772 1.108e-05 deg
peri 303.9593144725651 7.6021e-05 deg
M 46.36581901887157 0.00018755 deg
tp 2459319.370667491333
(2021-Apr-14.87066749)
7.5195e-05 TDB
period 598.8583894488875
1.64
0.0029713
8.135e-06
d
yr
n .6011437868162753 2.9827e-06 deg/d
Q 2.446939058805323 8.0939e-06 au
  Orbit Determination Parameters
   # obs. used (total)      74  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      12 days  
   first obs. used      2021-02-16  
   last obs. used      2021-02-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .29869  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-06 11:18:18  

Additional Information
 Earth MOID = .00231929 au 
 Jupiter MOID = 2.74247 au 
 T_jup = 4.412 
[ 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 24.37   .26605 MPO606207 autocmod 2.8

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