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392201 (2009 SL257)
Classification: Jupiter Trojan          SPK-ID: 2392201
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1573685974734711 1.8713e-07  
a 5.170763360513588 1.1731e-06 au
q 4.357047582602353 6.3026e-07 au
i 13.72221647068342 1.7174e-05 deg
node 354.4720301254512 4.3964e-05 deg
peri 97.38694534002718 0.00012885 deg
M 256.4635165477451 0.00018939 deg
tp 2460235.654629927216
(2023-Oct-18.15462993)
0.0026629 TDB
period 4294.676156147873
11.76
0.0014615
4.001e-06
d
yr
n .08382471388084903 2.8526e-08 deg/d
Q 5.984479138424823 1.3577e-06 au
  Orbit Determination Parameters
   # obs. used (total)      76  
   data-arc span      3189 days (8.73 yr)  
   first obs. used      2009-09-21  
   last obs. used      2018-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .58308  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:25:14  

Additional Information
 Earth MOID = 3.40914 au 
 Jupiter MOID = .211563 au 
 T_jup = 2.919 
[ 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 14.0   n/a MPO455783  

392201 (2009 SL257)          Discovered 2009-Sep-21 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-04-17

Alternate Designations
 2009 SL257 = 2014 DS123 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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