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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2231952968131469 3.5393e-08  
a 2.239994256091002 5.8899e-09 au
q 1.740038073243026 7.9342e-08 au
i 6.010594902498493 3.9107e-06 deg
node 180.6474984173355 3.1034e-05 deg
peri 182.3025518868578 3.2019e-05 deg
M 144.1562540517448 8.6989e-06 deg
tp 2458906.157235038948
(2020-Feb-26.65723504)
2.8457e-05 TDB
period 1224.528179836135
3.35
4.8297e-06
1.322e-08
d
yr
n .293990784310227 1.1595e-09 deg/d
Q 2.739950438938977 7.2046e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1705  
   data-arc span      12551 days (34.36 yr)  
   first obs. used      1986-11-27  
   last obs. used      2021-04-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52223  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:20:01  

Additional Information
 Earth MOID = .736744 au 
 Jupiter MOID = 2.71977 au 
 T_jup = 3.595 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.90   n/a MPCxxxxx  

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

Alternate Designations
 1998 FF28 = 1986 WR2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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