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295863 (2008 WA4)
Classification: Main-belt Asteroid          SPK-ID: 2295863
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06504160126032617 4.6411e-08  
a 2.231575388450746 1.3866e-08 au
q 2.086430151852775 9.8267e-08 au
i 2.211590319964818 6.0724e-06 deg
node 193.4147500755841 0.00010766 deg
peri 251.7117591762944 0.00011695 deg
M 129.9585550734501 4.6998e-05 deg
tp 2458560.940020255581
(2019-Mar-18.44002026)
0.000158 TDB
period 1217.631210338985
3.33
1.1349e-05
3.107e-08
d
yr
n .2956560220723786 2.7556e-09 deg/d
Q 2.376720625048717 1.4768e-08 au
  Orbit Determination Parameters
   # obs. used (total)      163  
   data-arc span      6823 days (18.68 yr)  
   first obs. used      2001-08-21  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52923  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 18:44:56  

Additional Information
 Earth MOID = 1.10377 au 
 Jupiter MOID = 2.73195 au 
 T_jup = 3.638 
[ 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 18.1   n/a MPO413252  

295863 (2008 WA4)          Discovered 2008-Nov-17 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ show close-approach data ]
Alternate Designations
 2008 WA4 = 2001 QP186 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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