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227436 (2005 WF20)
Classification: Main-belt Asteroid          SPK-ID: 2227436
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 .02542388600976996 5.0686e-08  
a 2.527575311280205 2.0025e-08 au
q 2.463314524685108 1.2885e-07 au
i 2.336427340547212 6.0283e-06 deg
node 324.3444703858558 0.00014599 deg
peri 142.900721923965 0.00020138 deg
M 229.3470316827311 0.00014249 deg
tp 2459733.186099541281
(2022-Jun-02.68609954)
0.00058357 TDB
period 1467.758431398107
4.02
1.7443e-05
4.776e-08
d
yr
n .2452719686693154 2.9148e-09 deg/d
Q 2.591836097875301 2.0534e-08 au
  Orbit Determination Parameters
   # obs. used (total)      221  
   data-arc span      6788 days (18.58 yr)  
   first obs. used      2001-12-19  
   last obs. used      2020-07-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6038  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 02:26:52  

Additional Information
 Earth MOID = 1.48039 au 
 Jupiter MOID = 2.41869 au 
 T_jup = 3.451 
[ 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 17.15   n/a E2021B55  

227436 (2005 WF20)          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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