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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01801600432742261 4.4766e-08  
a 2.697767142575127 1.9617e-08 au
q 2.649164158060115 1.2112e-07 au
i 3.026063939504216 5.7429e-06 deg
node 58.36191999327448 9.5013e-05 deg
peri 90.73149946001968 0.00019568 deg
M 128.3765219785654 0.00016908 deg
tp 2458423.350634062362
(2018-Oct-31.85063406)		 0.0007604 TDB
period 1618.471730930996
4.43		 1.7653e-05
4.833e-08		 d
yr
n .2224320592815771 2.4261e-09 deg/d
Q 2.746370127090139 1.997e-08 au
   Orbit Determination Parameters
   # obs. used (total)      424  
   data-arc span      8063 days (22.08 yr)  
   first obs. used      1997-04-03  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57728  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:07:42  

Additional Information
 Earth MOID = 1.66063 au 
 Jupiter MOID = 2.22107 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 15.8   n/a MPO436468  

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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