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447297 (2005 WM78)
Classification: Main-belt Asteroid          SPK-ID: 2447297
[ 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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07161161021491938 5.6345e-08  
a 3.080720255428336 5.1648e-08 au
q 2.860104917315395 2.0289e-07 au
i 13.36976057856508 7.1717e-06 deg
node 68.65672879632048 2.3771e-05 deg
peri 246.2208928275155 7.5118e-05 deg
M 2.808951296429038 6.5549e-05 deg
tp 2458985.089436075426
(2020-May-15.58943608)		 0.00035981 TDB
period 1975.044216643899
5.41		 4.9668e-05
1.36e-07		 d
yr
n .1822744002216474 4.5838e-09 deg/d
Q 3.301335593541277 5.5347e-08 au
   Orbit Determination Parameters
   # obs. used (total)      154  
   data-arc span      5362 days (14.68 yr)  
   first obs. used      2005-11-25  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49501  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 07:52:35  

Additional Information
 Earth MOID = 1.87654 au 
 Jupiter MOID = 1.90022 au 
 T_jup = 3.182 
[ 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 15.98   n/a E2021B25  

447297 (2005 WM78)          Discovered 2005-Nov-25 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-10-28

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[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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