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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04893168868553661 6.5745e-08  
a 3.234785644739293 3.8713e-08 au
q 3.076502120606467 2.326e-07 au
i 19.44599586064712 6.9743e-06 deg
node 243.6150486340245 1.7523e-05 deg
peri 226.7890601564544 8.6281e-05 deg
M 291.8198577960599 8.8877e-05 deg
tp 2459602.959413085057
(2022-Jan-23.45941309)
0.00052803 TDB
period 2125.037936665489
5.82
3.8148e-05
1.044e-07
d
yr
n .1694087403281351 3.0412e-09 deg/d
Q 3.393069168872119 4.0607e-08 au
  Orbit Determination Parameters
   # obs. used (total)      443  
   data-arc span      8393 days (22.98 yr)  
   first obs. used      1998-01-17  
   last obs. used      2021-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53034  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:36:20  

Additional Information
 Earth MOID = 2.11686 au 
 Jupiter MOID = 1.8895 au 
 T_jup = 3.094 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457866.5 (2017-Apr-23.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04510372149603403 6.5214e-08  
q 3.094140640344754 2.2857e-07 au
tp 2457475.107154798150
(2016-Mar-27.60715480)
0.00055506 TDB
node 243.6786476307142 1.7558e-05 deg
peri 226.8311602512438 9.3223e-05 deg
i 19.40873486571146 6.9712e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      443  
   data-arc span      8393 days (22.98 yr)  
   first obs. used      1998-01-17  
   last obs. used      2021-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53034  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:36:20  

Additional Information
 Jupiter MOID = 1.8895 au 
 T_jup = 3.094 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.252845961961231E-15 -1.475389266922121E-14 -1.541034518666434E-11 -3.882462098869969E-15 -2.411200155040539E-12 9.639011455851588E-16
q -1.475389266922121E-14 5.224586454064577E-14 5.711642045580956E-11 1.857441836807907E-14 8.997720898035889E-12 -2.192622910162025E-15
tp -1.541034518666434E-11 5.711642045580956E-11 3.080924786594813E-7 6.822639712254481E-11 5.084473186427432E-8 6.743572786637244E-11
node -3.882462098869969E-15 1.857441836807907E-14 6.822639712254481E-11 3.082910775046702E-10 -2.797265826315842E-10 -2.754468008859348E-11
peri -2.411200155040539E-12 8.997720898035889E-12 5.084473186427432E-8 -2.797265826315842E-10 8.690539686618119E-9 3.703701127087064E-11
i 9.639011455851588E-16 -2.192622910162025E-15 6.743572786637244E-11 -2.754468008859348E-11 3.703701127087064E-11 4.859703042136645E-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 14.68   n/a E2021B55  
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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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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