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266912 (2009 WZ248)
Classification: Main-belt Asteroid          SPK-ID: 2266912
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08917077029943203 5.0784e-08  
a 2.877183109396681 3.1399e-08 au
q 2.620622475239264 1.4485e-07 au
i 4.815175784194283 5.7631e-06 deg
node 146.0286325958056 6.5222e-05 deg
peri 185.6573322702094 7.2267e-05 deg
M 169.500709041523 3.1354e-05 deg
tp 2458361.197148733885
(2018-Aug-30.69714873)
0.00015435 TDB
period 1782.582669797465
4.88
2.918e-05
7.989e-08
d
yr
n .2019541680167365 3.3059e-09 deg/d
Q 3.133743743554098 3.4199e-08 au
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      5876 days (16.09 yr)  
   first obs. used      2004-12-14  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60322  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 20:08:19  

Additional Information
 Earth MOID = 1.60798 au 
 Jupiter MOID = 2.17044 au 
 T_jup = 3.285 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457206.5 (2015-Jul-03.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09052238394908427 5.1496e-08  
q 2.61529533188759 1.4688e-07 au
tp 2456568.428419163617
(2013-Oct-02.92841916)
0.00015152 TDB
node 146.1142572182156 6.5077e-05 deg
peri 183.5958327019416 7.1789e-05 deg
i 4.818896923800902 5.7746e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      5876 days (16.09 yr)  
   first obs. used      2004-12-14  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60322  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 20:08:19  

Additional Information
 Jupiter MOID = 2.17044 au 
 T_jup = 3.285 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.651823484487615E-15 -7.425317137392936E-15 -7.496981107258895E-13 -6.707364974771921E-15 -1.491456703579131E-13 1.517739548552431E-15
q -7.425317137392936E-15 2.157519369873523E-14 1.555068023521709E-12 2.061166124118822E-14 3.663682025730789E-13 -3.521364525640681E-15
tp -7.496981107258895E-13 1.555068023521709E-12 2.295810129587751E-8 -3.846670088776272E-11 4.618578035147682E-9 -2.648449668021951E-12
node -6.707364974771921E-15 2.061166124118822E-14 -3.846670088776272E-11 4.234970916207657E-9 -4.227193366928425E-9 -3.732521450562521E-11
peri -1.491456703579131E-13 3.663682025730789E-13 4.618578035147682E-9 -4.227193366928425E-9 5.153692720585746E-9 3.669708379945811E-11
i 1.517739548552431E-15 -3.521364525640681E-15 -2.648449668021951E-12 -3.732521450562521E-11 3.669708379945811E-11 3.33456682466523E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO454984  
diameter diameter 3.974 km 0.331 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.034   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

266912 (2009 WZ248)          Discovered 2009-Nov-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

Alternate Designations
 2009 WZ248 = 2007 EZ168 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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