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JPL Small-Body Database Browser
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201809 (2003 XK20)
Classification: Main-belt Asteroid          SPK-ID: 2201809
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1388153998030609 5.6818e-08  
a 3.183909465854287 4.1272e-08 au
q 2.741933800414974 1.9744e-07 au
i 25.83592491394283 7.7604e-06 deg
node 286.5484767973113 2.494e-05 deg
peri 141.2563489589784 6.0819e-05 deg
M 274.2832862385041 5.2788e-05 deg
tp 2459094.585949451486
(2020-Sep-02.08594945)
0.00030766 TDB
period 2075.102205824821
5.68
4.0348e-05
1.105e-07
d
yr
n .1734854307366058 3.3733e-09 deg/d
Q 3.6258851312936 4.7001e-08 au
  Orbit Determination Parameters
   # obs. used (total)      203  
   data-arc span      6325 days (17.32 yr)  
   first obs. used      2002-07-27  
   last obs. used      2019-11-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5576  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 14:37:41  

Additional Information
 Earth MOID = 1.79292 au 
 Jupiter MOID = 1.6728 au 
 T_jup = 3.029 
[ 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 15.2   n/a MPO352246  
diameter diameter 6.466 km 0.422 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

201809 (2003 XK20)          Discovered 2003-Dec-14 by Spacewatch at Kitt Peak
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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