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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1486876412195621 4.6083e-08  
a 2.46183633898748 1.1878e-08 au
q 2.095791700674829 1.1378e-07 au
i 11.60035117634092 5.2834e-06 deg
node 219.0030825325146 1.8844e-05 deg
peri 22.44636684874082 2.455e-05 deg
M 117.9832801276844 1.9681e-05 deg
tp 2458138.113485735930
(2018-Jan-19.61348574)
7.4942e-05 TDB
period 1410.870633151738
3.86
1.0211e-05
2.796e-08
d
yr
n .2551615942248351 1.8467e-09 deg/d
Q 2.827880977300131 1.3644e-08 au
  Orbit Determination Parameters
   # obs. used (total)      908  
   data-arc span      9878 days (27.04 yr)  
   first obs. used      1992-11-19  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55249  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:11:47  

Additional Information
 Earth MOID = 1.08866 au 
 Jupiter MOID = 2.18134 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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