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 ]  
392539 (2011 RO1)
Classification: Main-belt Asteroid          SPK-ID: 2392539
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .03042050489515538 7.9741e-08  
a 3.045873114849767 6.1608e-08 au
q 2.953216116849458 2.3821e-07 au
i 15.55528799959537 8.6933e-06 deg
node 342.2538133197166 2.3065e-05 deg
peri 315.5664609689437 0.00017531 deg
M 205.3259931918958 0.00018107 deg
tp 2459434.720721784468
(2021-Aug-08.22072178)
0.00099341 TDB
period 1941.628500094387
5.32
5.8909e-05
1.613e-07
d
yr
n .1854113698797167 5.6254e-09 deg/d
Q 3.138530112850076 6.3482e-08 au
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      4516 days (12.36 yr)  
   first obs. used      2006-09-28  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51983  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:18:17  

Additional Information
 Earth MOID = 1.95409 au 
 Jupiter MOID = 1.99812 au 
 T_jup = 3.182 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457061.5 (2015-Feb-08.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02924194450999588 7.9923e-08  
q 2.956298223527167 2.3838e-07 au
tp 2457493.666589449243
(2016-Apr-15.16658945)
0.00099055 TDB
node 342.2803053015589 2.3064e-05 deg
peri 315.7976295866846 0.00018192 deg
i 15.55615457420714 8.6937e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      4516 days (12.36 yr)  
   first obs. used      2006-09-28  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51983  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:18:17  

Additional Information
 Jupiter MOID = 1.99812 au 
 T_jup = 3.182 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.387658926656604E-15 -1.847340733698513E-14 3.47495392829814E-11 1.244494275086699E-14 6.090590336574162E-12 1.127820670558835E-14
q -1.847340733698513E-14 5.682692882216652E-14 -6.810055706149365E-11 -2.100116318180981E-14 -1.177117863868655E-11 -2.487500404965536E-14
tp 3.47495392829814E-11 -6.810055706149365E-11 9.811964977817993E-7 2.641500168546305E-10 1.787373877039917E-7 1.557801709979537E-11
node 1.244494275086699E-14 -2.100116318180981E-14 2.641500168546305E-10 5.319594423302896E-10 -4.637178653448224E-10 1.412213432888853E-11
peri 6.090590336574162E-12 -1.177117863868655E-11 1.787373877039917E-7 -4.637178653448224E-10 3.309403298194147E-8 -1.150010924983597E-11
i 1.127820670558835E-14 -2.487500404965536E-14 1.557801709979537E-11 1.412213432888853E-11 -1.150010924983597E-11 7.557974546767736E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO434454  

392539 (2011 RO1)          Discovered 2008-Dec-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Alternate Designations
 2011 RO1 = 2009 DX12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-08 01:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin