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305211 (2007 WJ29)
Classification: Main-belt Asteroid          SPK-ID: 2305211
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08516209308187632 7.3982e-08  
a 2.610510745047058 2.5711e-08 au
q 2.388194185986122 2.061e-07 au
i 6.981747641628333 5.3693e-06 deg
node 287.4316775751079 5.4821e-05 deg
peri 85.18881637920825 6.4071e-05 deg
M 31.84214911759695 3.2489e-05 deg
tp 2458864.234308126937
(2020-Jan-15.73430813)
0.00013866 TDB
period 1540.588510314872
4.22
2.276e-05
6.231e-08
d
yr
n .2336769342297779 3.4522e-09 deg/d
Q 2.832827304107994 2.79e-08 au
  Orbit Determination Parameters
   # obs. used (total)      278  
   data-arc span      7322 days (20.05 yr)  
   first obs. used      2000-01-07  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62113  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:53:15  

Additional Information
 Earth MOID = 1.40046 au 
 Jupiter MOID = 2.59304 au 
 T_jup = 3.394 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457639.5 (2016-Sep-08.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08649194793441624 7.4687e-08  
q 2.384277958426425 2.0831e-07 au
tp 2457318.633563200841
(2015-Oct-23.13356320)
0.00013162 TDB
node 287.5653548343338 5.4919e-05 deg
peri 84.00551374959724 6.3569e-05 deg
i 6.974893766206658 5.3691e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      278  
   data-arc span      7322 days (20.05 yr)  
   first obs. used      2000-01-07  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62113  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:53:15  

Additional Information
 Jupiter MOID = 2.59304 au 
 T_jup = 3.394 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.578129991121389E-15 -1.548426347162173E-14 -3.419267372070778E-12 6.169908213378757E-15 -8.334254821169482E-13 -1.408799369797932E-14
q -1.548426347162173E-14 4.339275115066409E-14 8.986487030461958E-12 -1.45162343956691E-14 2.200498116529818E-12 4.032203386726046E-14
tp -3.419267372070778E-12 8.986487030461958E-12 1.732415710059588E-8 1.100382486180436E-11 4.271584855644743E-9 1.073898313608432E-11
node 6.169908213378757E-15 -1.45162343956691E-14 1.100382486180436E-11 3.016132071772685E-9 -2.99132884163067E-9 1.256332464249965E-10
peri -8.334254821169482E-13 2.200498116529818E-12 4.271584855644743E-9 -2.99132884163067E-9 4.04104320471071E-9 -1.221429160483598E-10
i -1.408799369797932E-14 4.032203386726046E-14 1.073898313608432E-11 1.256332464249965E-10 -1.221429160483598E-10 2.882677832863992E-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 16.4   n/a MPO450228  

305211 (2007 WJ29)          Discovered 2007-Nov-19 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

Alternate Designations
 2007 WJ29 = 2000 AH252 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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