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305890 (2009 FL21)
Classification: Main-belt Asteroid          SPK-ID: 2305890
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03032117198535639 4.8743e-08  
a 2.675976973975323 2.2479e-08 au
q 2.594838215918564 1.3419e-07 au
i 1.824839854440875 6.0391e-06 deg
node 3.799470398182627 0.00017341 deg
peri 161.0478685161059 0.0002088 deg
M 207.0602732782326 0.00011887 deg
tp 2459679.765870484312
(2022-Apr-10.26587048)
0.00053047 TDB
period 1598.902512878288
4.38
2.0147e-05
5.516e-08
d
yr
n .2251544400614774 2.837e-09 deg/d
Q 2.757115732032083 2.316e-08 au
  Orbit Determination Parameters
   # obs. used (total)      199  
   data-arc span      7575 days (20.74 yr)  
   first obs. used      2000-01-30  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56057  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:10:20  

Additional Information
 Earth MOID = 1.60111 au 
 Jupiter MOID = 2.20658 au 
 T_jup = 3.377 
[ 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 16.8   n/a MPO440440  

305890 (2009 FL21)          Discovered 2009-Mar-19 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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