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20228 Jeanmarcmari (1997 XG)
Classification: Main-belt Asteroid          SPK-ID: 2020228
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1090370161895304 2.5901e-08  
a 2.210790109297758 5.3589e-09 au
q 1.969732152358605 5.6478e-08 au
i .7029479111356083 3.0609e-06 deg
node 88.42548848310685 0.0002853 deg
peri 334.1520296460399 0.00028585 deg
M 45.18805770813596 1.7754e-05 deg
tp 2459049.790416286998
(2020-Jul-19.29041629)
5.911e-05 TDB
period 1200.659043305423
3.29
4.3656e-06
1.195e-08
d
yr
n .2998353296110755 1.0902e-09 deg/d
Q 2.451848066236912 5.9432e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1860  
   data-arc span      11079 days (30.33 yr)  
   first obs. used      1990-11-19  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4826  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:01:41  

Additional Information
 Earth MOID = .982084 au 
 Jupiter MOID = 2.79522 au 
 T_jup = 3.649 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.80   n/a MPCxxxxx  

20228 Jeanmarcmari           Discovered 1997 Dec. 3 by the OCA-DLR Asteroid Survey at Caussols.
Jean Marc Mari (b. 1957) is an electronics engineer whose help and skill have been very valuable in constructing the first CCD camera for the OCA Schmidt Telescope. An amateur astronomer, he has traveled to see several total eclipses of the sun.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030806/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1997 XG = 1990 WR14 = 2000 RS8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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