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20318 (1998 GZ)
Classification: Main-belt Asteroid          SPK-ID: 2020318
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05626959094136773 4.6363e-08  
a 2.273819494376565 8.943e-09 au
q 2.145872601553489 1.0647e-07 au
i 6.543557670747806 4.952e-06 deg
node 31.86978824597447 3.3932e-05 deg
peri 174.4627625123544 4.9448e-05 deg
M 148.8322388519395 3.774e-05 deg
tp 2458482.741879322425
(2018-Dec-30.24187932)
0.00013001 TDB
period 1252.369277528329
3.43
7.3884e-06
2.023e-08
d
yr
n .2874551511759332 1.6959e-09 deg/d
Q 2.401766387199642 9.4462e-09 au
  Orbit Determination Parameters
   # obs. used (total)      948  
   data-arc span      8785 days (24.05 yr)  
   first obs. used      1996-10-08  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53873  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:03:32  

Additional Information
 Earth MOID = 1.1409 au 
 Jupiter MOID = 2.55544 au 
 T_jup = 3.600 
[ 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 15.4   n/a MPO435888  

20318 (1998 GZ)          Discovered 1998-Apr-03 by Urata, T. at Oohira
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 GZ = 1996 TC31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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