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JPL Small-Body Database Browser
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20047 (1993 FD18)
Classification: Main-belt Asteroid          SPK-ID: 2020047
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2742518233289363 5.0574e-08  
a 2.745676532214712 1.7974e-08 au
q 1.992669736983356 1.4115e-07 au
i 10.70446855034343 5.6532e-06 deg
node 47.02845163138514 2.5323e-05 deg
peri 311.9904030500729 2.6633e-05 deg
M 99.46085644267392 1.134e-05 deg
tp 2458141.384264014351
(2018-Jan-22.88426401)
5.0174e-05 TDB
period 1661.776007831754
4.55
1.6318e-05
4.468e-08
d
yr
n .2166356947647352 2.1273e-09 deg/d
Q 3.498683327446068 2.2904e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1033  
   data-arc span      11816 days (32.35 yr)  
   first obs. used      1986-12-01  
   last obs. used      2019-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54994  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:35:16  

Additional Information
 Earth MOID = 1.00755 au 
 Jupiter MOID = 2.01502 au 
 T_jup = 3.268 
[ 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 14.0   n/a MPO431730  
diameter diameter 4.677 km 0.303 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.424   0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20047 (1993 FD18)          Discovered 1993-Mar-17 by UESAC at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1993 FD18 = 1986 XQ1 = 1999 VA191 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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