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227449 (2005 WC54)
Classification: Main-belt Asteroid          SPK-ID: 2227449
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2055070541962363 3.3932e-08  
a 2.63623197554181 1.6768e-08 au
q 2.094467708070288 9.0855e-08 au
i 4.468958668412789 4.0093e-06 deg
node 84.28550987539177 7.145e-05 deg
peri 341.8531061953065 7.3101e-05 deg
M 201.2303348291138 1.8101e-05 deg
tp 2459890.007334246509
(2022-Nov-06.50733425)
8.3038e-05 TDB
period 1563.413515179853
4.28
1.4916e-05
4.084e-08
d
yr
n .2302653754138656 2.1969e-09 deg/d
Q 3.177996243013331 2.0214e-08 au
  Orbit Determination Parameters
   # obs. used (total)      413  
   data-arc span      7242 days (19.83 yr)  
   first obs. used      2000-08-26  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56599  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:39:48  

Additional Information
 Earth MOID = 1.10828 au 
 Jupiter MOID = 2.13734 au 
 T_jup = 3.363 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457314.5 (2015-Oct-19.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2061214133664875 3.3871e-08  
q 2.092370585444987 9.0569e-08 au
tp 2456765.517958645710
(2014-Apr-18.01795865)
6.6157e-05 TDB
node 84.29188602488991 7.1449e-05 deg
peri 342.1569113216593 7.3089e-05 deg
i 4.46957977174633 4.0095e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      413  
   data-arc span      7242 days (19.83 yr)  
   first obs. used      2000-08-26  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56599  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:39:48  

Additional Information
 Jupiter MOID = 2.13734 au 
 T_jup = 3.363 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.147256085040263E-15 -3.034633355398112E-15 -7.192978685427618E-14 4.857356818548207E-15 -5.704204983679385E-14 1.008696636328871E-16
q -3.034633355398112E-15 8.20272038151907E-15 5.272859558170653E-13 -1.219128777290856E-14 2.402553285691564E-13 -1.350575937236514E-16
tp -7.192978685427618E-14 5.272859558170653E-13 4.3767632942697E-9 8.891114310488296E-12 1.057458468076342E-9 -9.823834286388162E-13
node 4.857356818548207E-15 -1.219128777290856E-14 8.891114310488296E-12 5.104973739574768E-9 -5.087497635499468E-9 5.013028968738135E-11
peri -5.704204983679385E-14 2.402553285691564E-13 1.057458468076342E-9 -5.087497635499468E-9 5.341979543356159E-9 -5.020154423355793E-11
i 1.008696636328871E-16 -1.350575937236514E-16 -9.823834286388162E-13 5.013028968738135E-11 -5.020154423355793E-11 1.607584086531615E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.43   n/a E2021B55  

227449 (2005 WC54)          Discovered 2005-Nov-25 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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