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226563 (2003 WT68)
Classification: Outer Main-belt Asteroid          SPK-ID: 2226563
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04880537102421433 6.6112e-08  
a 3.234299080364619 3.9659e-08 au
q 3.076447913744149 2.329e-07 au
i 19.44690666986458 7.0473e-06 deg
node 243.6123569874337 1.8374e-05 deg
peri 226.9559421839754 8.7617e-05 deg
M 257.755564180008 9.0196e-05 deg
tp 2459603.900790598367
(2022-Jan-24.40079060)		 0.0005377 TDB
period 2124.55849429156
5.82		 3.9077e-05
1.07e-07		 d
yr
n .1694469702610109 3.1166e-09 deg/d
Q 3.39215024698509 4.1595e-08 au
   Orbit Determination Parameters
   # obs. used (total)      414  
   data-arc span      8340 days (22.83 yr)  
   first obs. used      1998-01-17  
   last obs. used      2020-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52723  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:59:42  

Additional Information
 Earth MOID = 2.11728 au 
 Jupiter MOID = 1.89045 au 
 T_jup = 3.094 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457725.5 (2016-Dec-03.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04478305287352771 6.5825e-08  
q 3.093558192416981 2.2995e-07 au
tp 2457472.316383745835
(2016-Mar-24.81638375)		 0.00056454 TDB
node 243.702816866947 1.8419e-05 deg
peri 226.2998676204262 9.4788e-05 deg
i 19.40635497948373 7.0424e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      414  
   data-arc span      8340 days (22.83 yr)  
   first obs. used      1998-01-17  
   last obs. used      2020-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52723  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:59:42  

Additional Information
 Jupiter MOID = 1.89045 au 
 T_jup = 3.094 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.332917635027562E-15 -1.497008116773115E-14 -1.487535285636151E-11 -6.142309764580203E-15 -2.327662623183518E-12 1.176024236963359E-15
q -1.497008116773115E-14 5.287678296404146E-14 5.623751395194426E-11 3.105996297549783E-14 8.858077041160162E-12 -5.079857214890083E-17
tp -1.487535285636151E-11 5.623751395194426E-11 3.187059180969433E-7 1.341637859636917E-10 5.252665184066682E-8 8.73388087379572E-11
node -6.142309764580203E-15 3.105996297549783E-14 1.341637859636917E-10 3.392443194728513E-10 -2.980195377977361E-10 -2.213780464562367E-11
peri -2.327662623183518E-12 8.858077041160162E-12 5.252665184066682E-8 -2.980195377977361E-10 8.984761016809752E-9 3.519981999368323E-11
i 1.176024236963359E-15 -5.079857214890083E-17 8.73388087379572E-11 -2.213780464562367E-11 3.519981999368323E-11 4.959572417415452E-11

[ 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 14.6   n/a MPO268233  
diameter diameter 6.604 km 0.370 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226563 (2003 WT68)          Discovered 2003-Nov-19 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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