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21143 (1993 FX31)
Classification: Main-belt Asteroid          SPK-ID: 2021143
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09882932447874611 3.6544e-08  
a 2.689177073024286 1.2393e-08 au
q 2.423407519493564 1.012e-07 au
i 3.898415819593716 3.8332e-06 deg
node 113.3659404327378 6.486e-05 deg
peri 242.3085431022656 6.8616e-05 deg
M 347.6777177755037 2.3721e-05 deg
tp 2459451.633577966860
(2021-Aug-25.13357797)
0.00010622 TDB
period 1610.747725661745
4.41
1.1134e-05
3.048e-08
d
yr
n .223498685898874 1.5449e-09 deg/d
Q 2.954946626555008 1.3617e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1409  
   data-arc span      11257 days (30.82 yr)  
   first obs. used      1990-08-26  
   last obs. used      2021-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50089  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:06:07  

Additional Information
 Earth MOID = 1.42067 au 
 Jupiter MOID = 2.44591 au 
 T_jup = 3.362 
[ 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 14.22   n/a E2021B10  
diameter diameter 6.214 km 0.277 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21143 (1993 FX31)          Discovered 1993-Mar-19 by UESAC at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1993 FX31 = 1990 QF17 = 1994 NS8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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