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138031 (2000 DK9)
Classification: Jupiter Trojan          SPK-ID: 2138031
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 .03559376689524807 4.9889e-08  
a 5.269068607161809 1.3938e-07 au
q 5.081522607403421 3.5239e-07 au
i 2.954372601202809 7.2821e-06 deg
node 158.0139504621709 0.00011448 deg
peri 299.4959929749934 0.00017334 deg
M 294.5480099893599 0.00013398 deg
tp 2459803.692346884503
(2022-Aug-12.19234688)
0.0016606 TDB
period 4417.730382703653
12.10
0.00017529
4.799e-07
d
yr
n .08148980784555707 3.2334e-09 deg/d
Q 5.456614606920196 1.4434e-07 au
  Orbit Determination Parameters
   # obs. used (total)      358  
   data-arc span      7213 days (19.75 yr)  
   first obs. used      2000-02-02  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52648  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 12:26:43  

Additional Information
 Earth MOID = 4.0996 au 
 Jupiter MOID = .152465 au 
 T_jup = 2.996 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457035.5 (2015-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03715765951301339 4.8979e-08  
q 5.057130172967995 3.4358e-07 au
tp 2455427.107052579861
(2010-Aug-18.60705258)
0.0015141 TDB
node 158.0471776535462 0.00011452 deg
peri 301.7535754906174 0.00017006 deg
i 2.955948352295809 7.2884e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      358  
   data-arc span      7213 days (19.75 yr)  
   first obs. used      2000-02-02  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52648  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 12:26:43  

Additional Information
 Jupiter MOID = .152465 au 
 T_jup = 2.996 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.398931958797717E-15 -1.584255741552125E-14 -1.652656268205742E-11 4.438132013637262E-15 -1.450947909669637E-12 9.745730692988447E-17
q -1.584255741552125E-14 1.180492432697416E-13 1.776983750380086E-10 -4.490081998154659E-14 1.568800963973027E-11 5.525390014662782E-16
tp -1.652656268205742E-11 1.776983750380086E-10 2.292566647431696E-6 -3.411000549552602E-10 1.903386428353242E-7 -4.590761093831371E-12
node 4.438132013637262E-15 -4.490081998154659E-14 -3.411000549552602E-10 1.311446572950136E-8 -1.312554102130368E-8 3.561787694417601E-10
peri -1.450947909669637E-12 1.568800963973027E-11 1.903386428353242E-7 -1.312554102130368E-8 2.89187036837348E-8 -3.560469305327187E-10
i 9.745730692988447E-17 5.525390014662782E-16 -4.590761093831371E-12 3.561787694417601E-10 -3.560469305327187E-10 5.312132817785202E-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 13.3   n/a MPO417733  

138031 (2000 DK9)          Discovered 2000-Feb-26 by Spacewatch at Kitt Peak
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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