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100561 (1997 GN18)
Classification: Main-belt Asteroid          SPK-ID: 2100561
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01857575221525704 4.3196e-08  
a 2.697164057520745 1.8927e-08 au
q 2.647062206304343 1.1512e-07 au
i 3.024351788982307 5.4461e-06 deg
node 58.30069859274046 9.0507e-05 deg
peri 92.39201235246635 0.00017534 deg
M 171.188348701429 0.00014972 deg
tp 2458431.137216574723
(2018-Nov-08.63721657)		 0.00067217 TDB
period 1617.929047941027
4.43		 1.7031e-05
4.663e-08		 d
yr
n .2225066670619055 2.3421e-09 deg/d
Q 2.747265908737148 1.9279e-08 au
   Orbit Determination Parameters
   # obs. used (total)      439  
   data-arc span      8501 days (23.27 yr)  
   first obs. used      1997-04-03  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57805  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:05:32  

Additional Information
 Earth MOID = 1.6578 au 
 Jupiter MOID = 2.2186 au 
 T_jup = 3.367 
[ 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 15.86   n/a E2021B55  

100561 (1997 GN18)          Discovered 1997-Apr-03 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1997 GN18 = 1999 VX97 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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