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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2230109934400988 4.0759e-08  
a 2.239563224918701 6.3003e-09 au
q 1.74011600525767 9.2232e-08 au
i 6.010096590928992 4.4343e-06 deg
node 180.658359314341 3.1859e-05 deg
peri 182.2470297006882 3.283e-05 deg
M 27.79022559074915 8.4566e-06 deg
tp 2458905.999743009237
(2020-Feb-26.49974301)
2.8536e-05 TDB
period 1224.174751859487
3.35
5.1657e-06
1.414e-08
d
yr
n .294075661545192 1.2409e-09 deg/d
Q 2.739010444579731 7.7053e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1440  
   data-arc span      12408 days (33.97 yr)  
   first obs. used      1986-11-27  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53724  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:13:17  

Additional Information
 Earth MOID = .737636 au 
 Jupiter MOID = 2.71912 au 
 T_jup = 3.595 
[ 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 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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