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39943 (1998 FO109)
Classification: Main-belt Asteroid          SPK-ID: 2039943
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .138203084691395 4.363e-08  
a 2.379021513001318 8.7551e-09 au
q 2.050233401357346 1.0225e-07 au
i 5.853181016210125 4.1247e-06 deg
node 307.6657568338588 3.8487e-05 deg
peri 79.89267281236724 4.2042e-05 deg
M 173.5093639332894 1.4704e-05 deg
tp 2458354.523977932254
(2018-Aug-24.02397793)
5.4802e-05 TDB
period 1340.281369677543
3.67
7.3986e-06
2.026e-08
d
yr
n .268600316429536 1.4827e-09 deg/d
Q 2.70780962464529 9.965e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1307  
   data-arc span      7974 days (21.83 yr)  
   first obs. used      1998-03-31  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51494  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:39:54  

Additional Information
 Earth MOID = 1.06416 au 
 Jupiter MOID = 2.7569 au 
 T_jup = 3.520 
[ 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 14.7   n/a MPO309462  
diameter diameter 2.460 km 0.241 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.351   0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39943 (1998 FO109)          Discovered 1998-Mar-31 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FO109 = 1999 NS27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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