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JPL Small-Body Database Browser
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100939 (1998 MG46)
Classification: Main-belt Asteroid          SPK-ID: 2100939
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2284168841786706 4.4309e-08  
a 2.264061567367274 1.128e-08 au
q 1.746911678560564 1.022e-07 au
i 6.31155106543638 5.5216e-06 deg
node 288.0311018486778 3.5992e-05 deg
peri 25.13638540307393 3.7417e-05 deg
M 141.2072813662675 1.0923e-05 deg
tp 2458512.426344372453
(2019-Jan-28.92634437)
3.6051e-05 TDB
period 1244.316258523273
3.41
9.299e-06
2.546e-08
d
yr
n .2893155156770515 2.1621e-09 deg/d
Q 2.781211456173984 1.3856e-08 au
  Orbit Determination Parameters
   # obs. used (total)      461  
   data-arc span      7889 days (21.60 yr)  
   first obs. used      1998-06-23  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57368  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:13:46  

Additional Information
 Earth MOID = .73504 au 
 Jupiter MOID = 2.50481 au 
 T_jup = 3.575 
[ 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 16.2   n/a MPO439690  

100939 (1998 MG46)          Discovered 1998-Jun-23 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 MG46 = 1999 XG217 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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