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(1999 GL4)
Classification: Apollo [NEO, PHA]          SPK-ID: 3019083
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6031806887292365 0.00016942  
a 2.118322790389764 0.00064575 au
q .840591390731628 0.00010265 au
i 7.261185434323867 0.0010987 deg
node 178.4236150310489 0.00099261 deg
peri 293.9013423170585 0.0009646 deg
M 332.7992974976441 1.1862 deg
tp 2459085.587204365673
(2020-Aug-24.08720437)
3.7494 TDB
period 1126.125090665926
3.08
0.51493
0.00141
d
yr
n .3196802939424044 0.00014618 deg/d
Q 3.3960541900479 0.0010353 au
  Orbit Determination Parameters
   # obs. used (total)      48  
   data-arc span      239 days  
   first obs. used      1998-09-25  
   last obs. used      1999-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .60314  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:17:30  

Additional Information
 Earth MOID = .0256852 au 
 Jupiter MOID = 1.81867 au 
 T_jup = 3.466 
[ 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 19.7   n/a MPO154047  

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