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39911 (1998 FD38)
Classification: Main-belt Asteroid          SPK-ID: 2039911
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1064428934693555 4.0893e-08  
a 2.317211256707844 8.6971e-09 au
q 2.0705605857641 9.721e-08 au
i 7.476612888361736 6.3378e-06 deg
node 346.7810755519987 2.6343e-05 deg
peri 61.78624454021326 3.9285e-05 deg
M 219.5072195655358 3.0401e-05 deg
tp 2459503.303599407734
(2021-Oct-15.80359941)
0.00011002 TDB
period 1288.38859354214
3.53
7.2535e-06
1.986e-08
d
yr
n .2794188040816625 1.5731e-09 deg/d
Q 2.563861927651589 9.6228e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1294  
   data-arc span      10328 days (28.28 yr)  
   first obs. used      1991-03-11  
   last obs. used      2019-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50345  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:38:30  

Additional Information
 Earth MOID = 1.09138 au 
 Jupiter MOID = 2.75831 au 
 T_jup = 3.561 
[ 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 14.8   n/a MPO385071  
diameter diameter 2.234 km 0.312 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.561   0.206 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39911 (1998 FD38)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FD38 = 1991 EO3 = 1996 TA50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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