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JPL Small-Body Database Browser
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379319 (2009 WA28)
Classification: Main-belt Asteroid          SPK-ID: 2379319
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03750411340707306 5.0733e-08  
a 2.633833239142127 2.7941e-08 au
q 2.535053658646022 1.4046e-07 au
i 5.106534086957637 5.9599e-06 deg
node 66.59956049088373 7.6412e-05 deg
peri 7.603693726948381 0.00012724 deg
M 154.5029812655954 0.00010395 deg
tp 2458330.437672877160
(2018-Jul-30.93767288)
0.00044631 TDB
period 1561.280149989816
4.27
2.4845e-05
6.802e-08
d
yr
n .2305800147413316 3.6692e-09 deg/d
Q 2.732612819638232 2.8989e-08 au
  Orbit Determination Parameters
   # obs. used (total)      151  
   data-arc span      7142 days (19.55 yr)  
   first obs. used      2000-10-07  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54583  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 00:28:30  

Additional Information
 Earth MOID = 1.54978 au 
 Jupiter MOID = 2.36356 au 
 T_jup = 3.392 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457611.5 (2016-Aug-11.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03802560963343263 5.0333e-08  
q 2.533637916468553 1.3924e-07 au
tp 2458335.337918499957
(2018-Aug-04.83791850)
0.00044215 TDB
node 66.6082207144127 7.6408e-05 deg
peri 8.796249658695938 0.00012648 deg
i 5.1068043911932 5.9602e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      151  
   data-arc span      7142 days (19.55 yr)  
   first obs. used      2000-10-07  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54583  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 00:28:30  

Additional Information
 Jupiter MOID = 2.36356 au 
 T_jup = 3.392 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.533392235014745E-15 -6.879190859279063E-15 -6.217219009690532E-12 1.406282639603587E-14 -1.46391125897972E-12 -1.672201304902042E-15
q -6.879190859279063E-15 1.938664508689707E-14 2.120762917099183E-11 -3.169239716695065E-14 4.89945361048172E-12 5.189527517048244E-15
tp -6.217219009690532E-12 2.120762917099183E-11 1.954987307180355E-7 2.29681362953811E-10 4.461543652838953E-8 8.483110006687966E-13
node 1.406282639603587E-14 -3.169239716695065E-14 2.29681362953811E-10 5.83825570111338E-9 -5.762186318149887E-9 -1.411262643756812E-10
peri -1.46391125897972E-12 4.89945361048172E-12 4.461543652838953E-8 -5.762186318149887E-9 1.599802003684572E-8 1.407206119344156E-10
i -1.672201304902042E-15 5.189527517048244E-15 8.483110006687966E-13 -1.411262643756812E-10 1.407206119344156E-10 3.552377974977924E-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 16.8   n/a MPO427885  

379319 (2009 WA28)          Discovered 2007-Mar-13 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2013-11-20
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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