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212239 (2005 JW38)
Classification: Main-belt Asteroid          SPK-ID: 2212239
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2833566640383233 3.306e-08  
a 2.652153799132777 1.5285e-08 au
q 1.900648346093948 8.8505e-08 au
i 4.116965667204448 4.9179e-06 deg
node 44.09712352987289 5.8312e-05 deg
peri 284.3178195689513 5.9047e-05 deg
M 109.5708049978669 1.0393e-05 deg
tp 2458520.336839771630
(2019-Feb-05.83683977)
4.3128e-05 TDB
period 1577.598500673409
4.32
1.3639e-05
3.734e-08
d
yr
n .2281949430392659 1.9728e-09 deg/d
Q 3.403659252171606 1.9617e-08 au
  Orbit Determination Parameters
   # obs. used (total)      549  
   data-arc span      5793 days (15.86 yr)  
   first obs. used      2004-03-19  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5533  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 02:43:10  

Additional Information
 Earth MOID = .894707 au 
 Jupiter MOID = 1.97786 au 
 T_jup = 3.328 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457114.5 (2015-Apr-02.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2858017792396244 3.3032e-08  
q 1.892214583852164 8.847e-08 au
tp 2456943.927852774551
(2014-Oct-13.42785277)
3.6728e-05 TDB
node 44.12236921397312 5.837e-05 deg
peri 284.2976136919542 5.9085e-05 deg
i 4.119330890655472 4.9152e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      549  
   data-arc span      5793 days (15.86 yr)  
   first obs. used      2004-03-19  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5533  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 02:43:10  

Additional Information
 Jupiter MOID = 1.97786 au 
 T_jup = 3.328 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.091107666819475E-15 -2.900372373105683E-15 -1.329524901600608E-13 -2.437156349512854E-16 -4.383662112332565E-14 -1.230661740540973E-15
q -2.900372373105683E-15 7.827013958336397E-15 4.554187163948123E-13 6.056918652153379E-16 1.426812121924541E-13 3.618287128326351E-15
tp -1.329524901600608E-13 4.554187163948123E-13 1.348917418305706E-9 -5.666664302653508E-12 3.514438493612445E-10 1.438201039451374E-12
node -2.437156349512854E-16 6.056918652153379E-16 -5.666664302653508E-12 3.407108460753949E-9 -3.39947927841834E-9 5.139360136881282E-11
peri -4.383662112332565E-14 1.426812121924541E-13 3.514438493612445E-10 -3.39947927841834E-9 3.491017701870085E-9 -5.091485868616074E-11
i -1.230661740540973E-15 3.618287128326351E-15 1.438201039451374E-12 5.139360136881282E-11 -5.091485868616074E-11 2.41593823624215E-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 15.7   n/a MPO450007  
diameter diameter 1.934 km 0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.272   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

212239 (2005 JW38)          Discovered 2005-May-07 by Spacewatch at Kitt Peak
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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