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100820 (1998 FM139)
Classification: Main-belt Asteroid          SPK-ID: 2100820
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0825800611625422 4.5058e-08  
a 2.36596741555689 1.0059e-08 au
q 2.17058568167162 1.0318e-07 au
i 5.453609922754287 4.5282e-06 deg
node 359.8815793603018 3.5555e-05 deg
peri 202.3559219374283 4.361e-05 deg
M 23.4420631857921 2.2822e-05 deg
tp 2458913.942461604990
(2020-Mar-05.44246161)
8.4474e-05 TDB
period 1329.26498726825
3.64
8.4771e-06
2.321e-08
d
yr
n .2708263615216631 1.7271e-09 deg/d
Q 2.56134914944216 1.089e-08 au
  Orbit Determination Parameters
   # obs. used (total)      732  
   data-arc span      10118 days (27.70 yr)  
   first obs. used      1992-10-03  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58684  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:04:04  

Additional Information
 Earth MOID = 1.16881 au 
 Jupiter MOID = 2.40131 au 
 T_jup = 3.537 
[ 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 16.06   n/a E2021B55  

100820 (1998 FM139)          Discovered 1998-Mar-28 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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