Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1564285421403034 1.8505e-07  
a 5.173316106757832 1.182e-06 au
q 4.364061810146754 6.3217e-07 au
i 13.71533726774431 1.7168e-05 deg
node 354.4932520744977 4.3981e-05 deg
peri 97.34027899767254 0.0001295 deg
M 222.8853458144753 0.00017939 deg
tp 2460237.442117058712
(2023-Oct-19.94211706)
0.0026782 TDB
period 4297.856896782002
11.77
0.001473
4.033e-06
d
yr
n .08376267722397834 2.8708e-08 deg/d
Q 5.982570403368909 1.367e-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 = 3.41617 au 
 Jupiter MOID = .212741 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin