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JPL Small-Body Database Browser
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31564 (1999 FF9)
Classification: Main-belt Asteroid          SPK-ID: 2031564
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1243021781265592 3.996e-08  
a 2.304127309929624 7.5841e-09 au
q 2.017719266624482 9.0583e-08 au
i 5.939361388799008 3.3719e-06 deg
node 80.43121791685149 5.0674e-05 deg
peri 57.60581934693005 5.451e-05 deg
M 59.3603829114387 1.9618e-05 deg
tp 2458789.854431461146
(2019-Nov-02.35443146)
6.9473e-05 TDB
period 1277.49183806856
3.50
6.3074e-06
1.727e-08
d
yr
n .2818021918200934 1.3913e-09 deg/d
Q 2.590535353234766 8.5269e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1641  
   data-arc span      14868 days (40.71 yr)  
   first obs. used      1979-08-14  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47203  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 07:16:47  

Additional Information
 Earth MOID = 1.03877 au 
 Jupiter MOID = 2.44374 au 
 T_jup = 3.572 
[ 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 13.9   n/a MPO452614  

31564 (1999 FF9)          Discovered 1999-Mar-20 by LONEOS at Anderson Mesa
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 FF9 = 1979 PJ = 1992 FB2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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