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187447 (2005 WD117)
Classification: Main-belt Asteroid          SPK-ID: 2187447
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2169259252202424 5.6753e-08  
a 2.711091548092099 2.1901e-08 au
q 2.122985505665441 1.5818e-07 au
i 15.02407868310996 4.6703e-06 deg
node 87.98269540480503 2.4675e-05 deg
peri 231.7195032569253 2.8715e-05 deg
M 214.402699504971 1.7596e-05 deg
tp 2459859.925175443668
(2022-Oct-07.42517544)
8.1373e-05 TDB
period 1630.477092312749
4.46
1.9757e-05
5.409e-08
d
yr
n .2207942703993211 2.6755e-09 deg/d
Q 3.299197590518757 2.6652e-08 au
  Orbit Determination Parameters
   # obs. used (total)      525  
   data-arc span      8900 days (24.37 yr)  
   first obs. used      1996-12-05  
   last obs. used      2021-04-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58985  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:15:02  

Additional Information
 Earth MOID = 1.14093 au 
 Jupiter MOID = 2.0738 au 
 T_jup = 3.280 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.67   n/a E2021B55  

187447 (2005 WD117)          Discovered 2005-Nov-29 by Reddy, V. at Goodricke-Pigott
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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