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393986 (2005 UJ388)
Classification: Main-belt Asteroid          SPK-ID: 2393986
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07854532415063177 8.1801e-08  
a 2.31200780333356 2.2501e-08 au
q 2.130410400981936 1.9425e-07 au
i 8.526430135772296 8.2657e-06 deg
node 53.21164277894614 4.5848e-05 deg
peri 106.4551203355438 6.6767e-05 deg
M 296.5465385584026 5.2717e-05 deg
tp 2459226.826385491544
(2021-Jan-12.32638549)
0.0001893 TDB
period 1284.05128618472
3.52
1.8745e-05
5.132e-08
d
yr
n .2803626333880027 4.0928e-09 deg/d
Q 2.493605205685185 2.4268e-08 au
  Orbit Determination Parameters
   # obs. used (total)      114  
   data-arc span      5146 days (14.09 yr)  
   first obs. used      2005-10-26  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61796  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 00:36:30  

Additional Information
 Earth MOID = 1.15554 au 
 Jupiter MOID = 2.50203 au 
 T_jup = 3.565 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457482.5 (2016-Apr-04.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07805018583246044 8.2276e-08  
q 2.131577453610258 1.9525e-07 au
tp 2457944.335614528920
(2017-Jul-09.83561453)
0.0001831 TDB
node 53.21706558150638 4.585e-05 deg
peri 106.8556528483354 6.6785e-05 deg
i 8.52652854622637 8.2681e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      114  
   data-arc span      5146 days (14.09 yr)  
   first obs. used      2005-10-26  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61796  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 00:36:30  

Additional Information
 Jupiter MOID = 2.50203 au 
 T_jup = 3.565 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.769385518493436E-15 -1.597653329762356E-14 5.02456695622351E-12 -2.665622355737741E-14 1.637877477090897E-12 2.571159501899979E-14
q -1.597653329762356E-14 3.81209007006521E-14 -1.046975244931636E-11 6.178191390368962E-14 -3.538001823397048E-12 -5.896938535567622E-14
tp 5.02456695622351E-12 -1.046975244931636E-11 3.352626422647075E-8 2.449735748960708E-11 8.905921805854234E-9 2.662889618707717E-11
node -2.665622355737741E-14 6.178191390368962E-14 2.449735748960708E-11 2.102254721455748E-9 -2.073895780055453E-9 -2.062313649097387E-10
peri 1.637877477090897E-12 -3.538001823397048E-12 8.905921805854234E-9 -2.073895780055453E-9 4.460251444127658E-9 2.121144877789319E-10
i 2.571159501899979E-14 -5.896938535567622E-14 2.662889618707717E-11 -2.062313649097387E-10 2.121144877789319E-10 6.836145651913488E-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 17.6   n/a MPO503478  

393986 (2005 UJ388)          Discovered 2005-Oct-26 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-05-15

Alternate Designations
 2005 UJ388 = 2014 EM4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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