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(2021 GW4)
Classification: Apollo [NEO]          SPK-ID: 54135784
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3532014770937553 8.6001e-05  
a 1.510897382027381 0.00019108 au
q .977246194958222 6.3529e-06 au
i .7371294752963745 0.00013999 deg
node 201.5230131516133 2.4817e-05 deg
peri 26.56755547855263 0.00088798 deg
M 286.5248006721985 0.013975 deg
tp 2459338.948786033873
(2021-May-04.44878603)
7.4283e-05 TDB
period 678.3453931146427
1.86
0.12868
0.0003523
d
yr
n .5307030955823986 0.00010067 deg/d
Q 2.044548569096539 0.00025857 au
  Orbit Determination Parameters
   # obs. used (total)      40  
   data-arc span      4 days  
   first obs. used      2021-04-08  
   last obs. used      2021-04-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .35498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 07:01:18  

Additional Information
 Earth MOID = .000117223 au 
 Jupiter MOID = 2.94335 au 
 T_jup = 4.452 
[ 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 29.47   .22693 E2021-GL9 autocmod 2.9c

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