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 ]  
392193 (2009 SQ121)
Classification: Jupiter Trojan          SPK-ID: 2392193
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07255327994227745 9.4583e-08  
a 5.17961895059956 3.898e-07 au
q 4.803820606882384 4.9898e-07 au
i 10.17129941854666 8.5083e-06 deg
node 1.688555743712696 4.1712e-05 deg
peri 124.5492852820911 9.7487e-05 deg
M 190.8371818371478 0.00010029 deg
tp 2460623.740707811512
(2024-Nov-09.24070781)
0.0014066 TDB
period 4305.713647492852
11.79
0.00048605
1.331e-06
d
yr
n .08360983322930038 9.4382e-09 deg/d
Q 5.555417294316735 4.1808e-07 au
  Orbit Determination Parameters
   # obs. used (total)      144  
   data-arc span      6018 days (16.48 yr)  
   first obs. used      2003-04-04  
   last obs. used      2019-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51165  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 13:03:38  

Additional Information
 Earth MOID = 3.83164 au 
 Jupiter MOID = .42875 au 
 T_jup = 2.963 
[ 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 13.7   n/a MPO455783  

392193 (2009 SQ121)          Discovered 2009-Sep-18 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-04-17

Alternate Designations
 2009 SQ121 = 2014 EJ43 
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