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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2831838089636047 5.0528e-08  
a 2.651367124500531 2.2846e-08 au
q 1.900542883223591 1.4391e-07 au
i 4.117648746636712 5.1029e-06 deg
node 44.10198515086257 6.9296e-05 deg
peri 284.2673815056108 6.9926e-05 deg
M 18.33529908214618 1.126e-05 deg
tp 2458520.186468098933
(2019-Feb-05.68646810)
4.8622e-05 TDB
period 1576.896638273977
4.32
2.0381e-05
5.58e-08
d
yr
n .2282965105398697 2.9507e-09 deg/d
Q 3.402191365777472 2.9315e-08 au
  Orbit Determination Parameters
   # obs. used (total)      452  
   data-arc span      5202 days (14.24 yr)  
   first obs. used      2004-03-19  
   last obs. used      2018-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59088  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 08:30:21  

Additional Information
 Earth MOID = .89371 au 
 Jupiter MOID = 1.97587 au 
 T_jup = 3.328 
[ show covariance matrix ]

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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