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JPL Small-Body Database Browser
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212939 (2008 WL91)
Classification: Main-belt Asteroid          SPK-ID: 2212939
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09308594899910315 5.8202e-08  
a 2.479078121859925 1.6295e-08 au
q 2.24831078224368 1.484e-07 au
i 2.146507223400374 4.5529e-06 deg
node 291.0073819968833 0.0001906 deg
peri 167.2545389751666 0.00020923 deg
M 350.9534100792408 8.3777e-05 deg
tp 2459036.327470694117
(2020-Jul-05.82747069)
0.0003318 TDB
period 1425.718371547419
3.90
1.4057e-05
3.849e-08
d
yr
n .2525042863895133 2.4895e-09 deg/d
Q 2.709845461476171 1.7812e-08 au
  Orbit Determination Parameters
   # obs. used (total)      356  
   data-arc span      6896 days (18.88 yr)  
   first obs. used      2000-12-30  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54418  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 15:05:50  

Additional Information
 Earth MOID = 1.26523 au 
 Jupiter MOID = 2.40642 au 
 T_jup = 3.472 
[ 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 16.7   n/a MPO494176  

212939 (2008 WL91)          Discovered 2008-Nov-23 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Alternate Designations
 2008 WL91 = 2004 XP144 = 2007 TO297 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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