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16588 Johngee (1992 ST)
Classification: Mars-crossing Asteroid          SPK-ID: 2016588
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3861837900312989 6.8712e-08  
a 2.562411844556166 1.8051e-08 au
q 1.572849926804374 1.7022e-07 au
i 8.104926785969631 7.3504e-06 deg
node 30.52057112732792 3.8328e-05 deg
peri 16.65345461227837 4.0815e-05 deg
M 260.3970816067965 2.5138e-05 deg
tp 2459415.016086615911
(2021-Jul-19.51608662)
0.00010845 TDB
period 1498.207016310785
4.10
1.5831e-05
4.334e-08
d
yr
n .2402872207116419 2.539e-09 deg/d
Q 3.551973762307958 2.5022e-08 au
  Orbit Determination Parameters
   # obs. used (total)      520  
   data-arc span      11160 days (30.55 yr)  
   first obs. used      1988-11-09  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56093  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:45:09  

Additional Information
 Earth MOID = .584278 au 
 Jupiter MOID = 1.87774 au 
 T_jup = 3.312 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO473988  

16588 Johngee           Discovered 1992 Sept. 23 by E. F. Helin at Palomar.
For more than half a century John Gee has provided leadership and service to the Caltech Class of 1953 and the Caltech community, including a stint as president of the Alumni Association.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030614/MPCPages.arcLast Updated: 2005-04-26

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