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39954 (1998 FN118)
Classification: Main-belt Asteroid          SPK-ID: 2039954
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04203175384499103 4.4653e-08  
a 2.421963629543718 9.6025e-09 au
q 2.320164250445216 1.0816e-07 au
i 22.04336195470622 5.0614e-06 deg
node 206.0407997581412 1.0669e-05 deg
peri 139.7500074680788 4.9894e-05 deg
M 169.7347339575074 4.9297e-05 deg
tp 2458351.390334885017
(2018-Aug-20.89033489)
0.00018782 TDB
period 1376.733412148245
3.77
8.1876e-06
2.242e-08
d
yr
n .2614885328004486 1.5551e-09 deg/d
Q 2.523763008642221 1.0006e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1523  
   data-arc span      25487 days (69.78 yr)  
   first obs. used      1950-07-17  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52198  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:47:47  

Additional Information
 Earth MOID = 1.33793 au 
 Jupiter MOID = 2.61728 au 
 T_jup = 3.412 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457029.5 (2015-Jan-07.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04231665690405999 4.463e-08  
q 2.319591005726724 1.0813e-07 au
tp 2456969.251659474055
(2014-Nov-07.75165947)
0.00018551 TDB
node 206.0679950043328 1.0674e-05 deg
peri 138.4029533527418 4.9644e-05 deg
i 22.03649169480797 5.0613e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1523  
   data-arc span      25487 days (69.78 yr)  
   first obs. used      1950-07-17  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52198  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:47:47  

Additional Information
 Jupiter MOID = 2.61728 au 
 T_jup = 3.412 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.991871825067828E-15 -4.808619490243784E-15 1.617207309429407E-12 -8.658287257255094E-15 4.2567863023904E-13 -3.704123297338182E-16
q -4.808619490243784E-15 1.169277431431114E-14 -3.671319000987836E-12 2.040659106586964E-14 -9.675417864604363E-13 9.988135431862107E-16
tp 1.617207309429407E-12 -3.671319000987836E-12 3.441347793802652E-8 8.466474522130697E-12 9.007266130879431E-9 -3.165936068315018E-11
node -8.658287257255094E-15 2.040659106586964E-14 8.466474522130697E-12 1.139270142413599E-10 -1.028632039212221E-10 -9.818758158124769E-12
peri 4.2567863023904E-13 -9.675417864604363E-13 9.007266130879431E-9 -1.028632039212221E-10 2.46449338091029E-9 7.55081773448587E-13
i -3.704123297338182E-16 9.988135431862107E-16 -3.165936068315018E-11 -9.818758158124769E-12 7.55081773448587E-13 2.561638305691707E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO459140  

39954 (1998 FN118)          Discovered 1998-Mar-31 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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