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100208 (1994 JD2)
Classification: Main-belt Asteroid          SPK-ID: 2100208
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08650301421993747 4.368e-08  
a 3.078942243635428 2.4593e-08 au
q 2.812604458951867 1.3836e-07 au
i 3.619086338220507 4.9699e-06 deg
node 190.951605232933 8.5702e-05 deg
peri 28.86271354308874 9.2687e-05 deg
M 326.7791129724736 3.6947e-05 deg
tp 2459382.599797907606
(2021-Jun-17.09979791)
0.00020362 TDB
period 1973.334643124356
5.40
2.3643e-05
6.473e-08
d
yr
n .1824323113438157 2.1858e-09 deg/d
Q 3.34528002831899 2.672e-08 au
  Orbit Determination Parameters
   # obs. used (total)      419  
   data-arc span      9471 days (25.93 yr)  
   first obs. used      1994-04-19  
   last obs. used      2020-03-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57853  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:07:28  

Additional Information
 Earth MOID = 1.80435 au 
 Jupiter MOID = 1.62286 au 
 T_jup = 3.220 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.60   n/a E2021B55  
diameter diameter 3.907 km 0.763 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100208 (1994 JD2)          Discovered 1994-May-01 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1994 JD2 = 1999 EQ9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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