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308609 (2005 WP31)
Classification: Main-belt Asteroid          SPK-ID: 2308609
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2268176337207109 1.0467e-07  
a 2.535096298452579 1.4864e-08 au
q 1.960091754783432 2.6938e-07 au
i 7.225971264585221 8.6709e-06 deg
node 62.36123923213384 3.0951e-05 deg
peri 312.7723188963039 3.5522e-05 deg
M 251.5532278907156 1.5547e-05 deg
tp 2459444.624005176057
(2021-Aug-18.12400518)
6.3726e-05 TDB
period 1474.314437890884
4.04
1.2967e-05
3.55e-08
d
yr
n .2441812891115729 2.1476e-09 deg/d
Q 3.110100842121726 1.8235e-08 au
  Orbit Determination Parameters
   # obs. used (total)      339  
   data-arc span      6306 days (17.26 yr)  
   first obs. used      2001-11-21  
   last obs. used      2019-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62085  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 05:39:50  

Additional Information
 Earth MOID = .9703 au 
 Jupiter MOID = 2.36779 au 
 T_jup = 3.401 
[ 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 16.6   n/a MPO437367  

308609 (2005 WP31)          Discovered 2005-Nov-21 by Spacewatch at Kitt Peak
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

[ show close-approach data ]
Alternate Designations
 2005 WP31 = 2001 YL42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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