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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05677708920048514 7.4294e-08  
a 5.290538977559121 3.4081e-07 au
q 4.990157574111604 5.522e-07 au
i 13.65416811912508 8.8766e-06 deg
node 185.3878152698862 2.8125e-05 deg
peri 255.4942009199384 0.00013177 deg
M 255.6504294827976 0.00014323 deg
tp 2460288.857736087787
(2023-Dec-10.35773609)
0.0018555 TDB
period 4444.759884422743
12.17
0.00042949
1.176e-06
d
yr
n .08099425151438849 7.8264e-09 deg/d
Q 5.590920381006638 3.6016e-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 = 4.03695 au 
 Jupiter MOID = .0827322 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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