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(2018 GD2)
Classification: Apollo [NEO]          SPK-ID: 3802441
[ 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 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1737228116901693 9.2818e-05  
a 1.030606537336494 4.4788e-05 au
q .851566671924129 5.8879e-05 au
i 9.674357324018741 0.0054684 deg
node 22.20337238107206 0.00030279 deg
peri 270.6691912076551 0.02945 deg
M 130.8240018453094 0.073449 deg
tp 2459061.625440183867
(2020-Jul-31.12544018)		 0.068918 TDB
period 382.1534338394844
1.05		 0.024911
6.82e-05		 d
yr
n .9420300018845587 6.1408e-05 deg/d
Q 1.20964640274886 5.2569e-05 au
   Orbit Determination Parameters
   # obs. used (total)      13  
   data-arc span      1 day  
   first obs. used      2018-04-11  
   last obs. used      2018-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .46932  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Apr-12 12:12:03  

Additional Information
 Earth MOID = .000162821 au 
 Jupiter MOID = 3.91174 au 
 T_jup = 5.913 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458220.5 (2018-Apr-12.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1758881301037037 0.00010116  
q .8685126057635468 5.018e-05 au
tp 2458291.895251178900
(2018-Jun-22.39525118)		 0.011439 TDB
node 22.34425631847367 4.3977e-05 deg
peri 264.319781626118 0.0065295 deg
i 9.919707572496613 0.0049615 deg
   Orbit Determination Parameters
   # obs. used (total)      13  
   data-arc span      1 day  
   first obs. used      2018-04-11  
   last obs. used      2018-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .46932  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Apr-12 12:12:03  

Additional Information
 Jupiter MOID = 3.91174 au 
 T_jup = 5.913 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.023301372586699E-8 -5.033933333380606E-9 -1.144473762669739E-6 4.352445693460359E-9 -6.120343941854574E-7 5.01875541186613E-7
q -5.033933333380606E-9 2.518009597815091E-9 5.520848567313116E-7 -2.100653772547564E-9 2.852293308400906E-7 -2.466540898475212E-7
tp -1.144473762669739E-6 5.520848567313116E-7 .0001308600504498436 -4.973235383746607E-7 7.260365840364238E-5 -5.619173315823382E-5
node 4.352445693460359E-9 -2.100653772547564E-9 -4.973235383746607E-7 1.934007972470654E-9 -2.756879108616619E-7 2.136476930910317E-7
peri -6.120343941854574E-7 2.852293308400906E-7 7.260365840364238E-5 -2.756879108616619E-7 4.263484011374188E-5 -3.010602534248283E-5
i 5.01875541186613E-7 -2.466540898475212E-7 -5.619173315823382E-5 2.136476930910317E-7 -3.010602534248283E-5 2.461620432650661E-5

[ 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 29.4   n/a MPO445231  

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