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227481 (2005 WT194)
Classification: Main-belt Asteroid          SPK-ID: 2227481
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2176270361837898 5.0297e-08  
a 2.642115031475452 2.0589e-08 au
q 2.067119367918809 1.2989e-07 au
i 12.2679656024172 6.8849e-06 deg
node 245.9283184573302 2.763e-05 deg
peri 247.5629643869507 3.329e-05 deg
M 172.9630338568049 1.684e-05 deg
tp 2458446.837679292552
(2018-Nov-24.33767929)
7.2368e-05 TDB
period 1568.649840400603
4.29
1.8336e-05
5.02e-08
d
yr
n .2294967243346437 2.6826e-09 deg/d
Q 3.217110695032095 2.507e-08 au
  Orbit Determination Parameters
   # obs. used (total)      350  
   data-arc span      8171 days (22.37 yr)  
   first obs. used      1996-12-17  
   last obs. used      2019-05-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58063  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:39:56  

Additional Information
 Earth MOID = 1.11681 au 
 Jupiter MOID = 2.03608 au 
 T_jup = 3.329 
[ 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 15.9   n/a MPO470432  
diameter diameter 2.356 km 0.435 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.201   0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

227481 (2005 WT194)          Discovered 2005-Nov-29 by CSS at Catalina
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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