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39938 (1998 FF99)
Classification: Main-belt Asteroid          SPK-ID: 2039938
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1484239112016948 4.6072e-08  
a 2.46245213092664 1.1893e-08 au
q 2.09696535450756 1.1379e-07 au
i 11.59803094999942 5.2646e-06 deg
node 218.9995229081719 1.8696e-05 deg
peri 22.52077856045002 2.4429e-05 deg
M 219.9400473248256 2.0203e-05 deg
tp 2459549.612836806478
(2021-Dec-01.11283681)
8.2e-05 TDB
period 1411.400028877567
3.86
1.0225e-05
2.799e-08
d
yr
n .2550658868033992 1.8479e-09 deg/d
Q 2.827938907345719 1.3658e-08 au
  Orbit Determination Parameters
   # obs. used (total)      918  
   data-arc span      9930 days (27.19 yr)  
   first obs. used      1992-11-19  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54864  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:39:25  

Additional Information
 Earth MOID = 1.0899 au 
 Jupiter MOID = 2.1811 au 
 T_jup = 3.446 
[ 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 15.1   n/a MPO449243  
diameter diameter 3.010 km 0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.214   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39938 (1998 FF99)          Discovered 1998-Mar-31 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FF99 = 1999 TT107 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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