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(2021 GW4)
Classification: Apollo [NEO]          SPK-ID: 54135784
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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459314.5 (2021-Apr-10.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3555924682136914 8.5031e-05  
q .9769115603248548 6.1966e-06 au
tp 2459338.942811157739
(2021-May-04.44281116)
7.6789e-05 TDB
node 201.4792966183061 2.064e-05 deg
peri 26.64400993098895 0.00084055 deg
i .7405220093339596 0.00013836 deg
  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
 Jupiter MOID = 2.94335 au 
 T_jup = 4.452 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.230224629789958E-9 -5.267094278576644E-10 -6.097447999877907E-9 8.466261488441591E-10 7.141200687456424E-8 1.16575231885464E-8
q -5.267094278576644E-10 3.839769396788928E-11 4.443859469371613E-10 -6.383164770019337E-11 -5.202396677135556E-9 -8.465414985012278E-10
tp -6.097447999877907E-9 4.443859469371613E-10 5.896623306213088E-9 -8.760848119722907E-10 -5.933045353272645E-8 -9.625148669873455E-9
node 8.466261488441591E-10 -6.383164770019337E-11 -8.760848119722907E-10 4.26003886849684E-10 8.068654739948891E-9 1.095552599304471E-9
peri 7.141200687456424E-8 -5.202396677135556E-9 -5.933045353272645E-8 8.068654739948891E-9 7.065212816243489E-7 1.153714192032838E-7
i 1.16575231885464E-8 -8.465414985012278E-10 -9.625148669873455E-9 1.095552599304471E-9 1.153714192032838E-7 1.914430705900075E-8

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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