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20269 (1998 FF28)
Classification: Main-belt Asteroid          SPK-ID: 2020269
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2230109789806345 4.3816e-08  
a 2.239563223982229 6.5445e-09 au
q 1.740116036912926 9.9521e-08 au
i 6.01009969540001 4.6781e-06 deg
node 180.6583548563761 3.1884e-05 deg
peri 182.2470227878494 3.2861e-05 deg
M 27.79023302473614 8.5015e-06 deg
tp 2458905.999717789346
(2020-Feb-26.49971779)
2.8679e-05 TDB
period 1224.174751091655
3.35
5.3659e-06
1.469e-08
d
yr
n .2940756617296434 1.289e-09 deg/d
Q 2.739010411051531 8.004e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1390  
   data-arc span      11965 days (32.76 yr)  
   first obs. used      1986-11-27  
   last obs. used      2019-08-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54096  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:29:31  

Additional Information
 Earth MOID = .737636 au 
 Jupiter MOID = 2.71912 au 
 T_jup = 3.595 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456552.5 (2013-Sep-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2229132971971804 4.3786e-08  
q 1.740446644971179 9.9424e-08 au
tp 2456457.748356359377
(2013-Jun-14.24835636)
2.4512e-05 TDB
node 180.7755761769469 3.19e-05 deg
peri 182.2196952277571 3.2877e-05 deg
i 6.007656211678412 4.6773e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1390  
   data-arc span      11965 days (32.76 yr)  
   first obs. used      1986-11-27  
   last obs. used      2019-08-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54096  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:29:31  

Additional Information
 Jupiter MOID = 2.71912 au 
 T_jup = 3.595 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.917230339809691E-15 -4.348014434284999E-15 -1.444548083862501E-13 1.411926104750135E-14 -3.453616514948892E-14 -1.304975540728685E-15
q -4.348014434284999E-15 9.885074363062197E-15 3.473680481402225E-13 -3.20783051780226E-14 8.353916729513764E-14 3.137509816799745E-15
tp -1.444548083862501E-13 3.473680481402225E-13 6.008387134775712E-10 -3.927554982945097E-12 2.020783266618481E-10 6.828796986337416E-13
node 1.411926104750135E-14 -3.20783051780226E-14 -3.927554982945097E-12 1.017596481981217E-9 -1.012293681563687E-9 -4.082540184051402E-12
peri -3.453616514948892E-14 8.353916729513764E-14 2.020783266618481E-10 -1.012293681563687E-9 1.080903928707404E-9 4.199787028897741E-12
i -1.304975540728685E-15 3.137509816799745E-15 6.828796986337416E-13 -4.082540184051402E-12 4.199787028897741E-12 2.187726183894328E-11

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 14.8   n/a MPO435887  

20269 (1998 FF28)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 FF28 = 1986 WR2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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