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JPL Small-Body Database Browser
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392198 (2009 ST245)
Classification: Jupiter Trojan          SPK-ID: 2392198
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05565670309780224 7.3835e-08  
a 5.295205161603652 3.4256e-07 au
q 5.000491500082328 5.5351e-07 au
i 13.64710060923777 8.8737e-06 deg
node 185.4234171512339 2.8135e-05 deg
peri 255.0675175247811 0.00013447 deg
M 223.5807381750241 0.0001439 deg
tp 2460287.036747788917
(2023-Dec-08.53674779)
0.001892 TDB
period 4450.641508256945
12.19
0.00043188
1.182e-06
d
yr
n .08088721577150591 7.8491e-09 deg/d
Q 5.589918823124976 3.6162e-07 au
  Orbit Determination Parameters
   # obs. used (total)      126  
   data-arc span      8796 days (24.08 yr)  
   first obs. used      1995-07-05  
   last obs. used      2019-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:08:38  

Additional Information
 Earth MOID = 4.0468 au 
 Jupiter MOID = .0742409 au 
 T_jup = 2.940 
[ 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 13.5   n/a MPO413428  

392198 (2009 ST245)          Discovered 2008-Sep-26 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-04-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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