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
JPL Small-Body Database Browser
Search: [ help ]  
523656 (2011 WO4)
Classification: Apollo [NEO, PHA]          SPK-ID: 2523656
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4973467141064071 1.3995e-07  
a 1.737576323832772 4.7704e-08 au
q .8733984486654526 2.2208e-07 au
i 60.92901793164684 2.2317e-05 deg
node 225.1845433334206 7.721e-06 deg
peri 236.0142266422464 2.7352e-05 deg
M 238.1180034682973 5.8783e-05 deg
tp 2459283.737870959051
(2021-Mar-10.23787096)
0.00014805 TDB
period 836.5930690898736
2.29
3.4452e-05
9.432e-08
d
yr
n .4303167373734552 1.7721e-08 deg/d
Q 2.601754199000092 7.1429e-08 au
  Orbit Determination Parameters
   # obs. used (total)      111  
   data-arc span      2732 days (7.48 yr)  
   first obs. used      2011-11-17  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .28855  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-13 07:43:10  

Additional Information
 Earth MOID = .0309395 au 
 Jupiter MOID = 3.34204 au 
 T_jup = 3.482 
[ show covariance matrix ]

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 19.3   n/a MPO473044  

523656 (2011 WO4)          Discovered 2011-Nov-17 by LINEAR at Socorro
Reference: Last Updated: 2018-10-01

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-01 12:54 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin