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227437 (2005 WB22)
Classification: Main-belt Asteroid          SPK-ID: 2227437
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09997973538671272 5.3898e-08  
a 2.727775385919281 2.8824e-08 au
q 2.455053124640683 1.4354e-07 au
i 5.131082150272507 5.5096e-06 deg
node 42.2011263269362 6.429e-05 deg
peri 252.3840549196727 7.0865e-05 deg
M 246.6124330133056 3.4329e-05 deg
tp 2459718.791721358536
(2022-May-19.29172136)
0.00016068 TDB
period 1645.550959841726
4.51
2.6082e-05
7.141e-08
d
yr
n .2187717115941678 3.4676e-09 deg/d
Q 3.000497647197879 3.1706e-08 au
  Orbit Determination Parameters
   # obs. used (total)      208  
   data-arc span      7058 days (19.32 yr)  
   first obs. used      2000-10-07  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50957  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 06:05:18  

Additional Information
 Earth MOID = 1.44325 au 
 Jupiter MOID = 2.16076 au 
 T_jup = 3.343 
[ 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 16.57   n/a E2021B55  

227437 (2005 WB22)          Discovered 2005-Nov-21 by Spacewatch at Kitt Peak
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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