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 ]  
136209 (2003 WF20)
Classification: Main-belt Asteroid          SPK-ID: 2136209
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2614853809171404 5.3022e-08  
a 2.266003474292821 1.2293e-08 au
q 1.673476692657799 1.205e-07 au
i 7.44022513059713 6.3429e-06 deg
node 311.307908453155 3.4541e-05 deg
peri 35.37986902868573 3.5716e-05 deg
M 234.4680074902439 1.2109e-05 deg
tp 2459034.951404376937
(2020-Jul-04.45140438)
4.4431e-05 TDB
period 1245.91749440719
3.41
1.0139e-05
2.776e-08
d
yr
n .2889436913888819 2.3514e-09 deg/d
Q 2.858530255927843 1.5508e-08 au
  Orbit Determination Parameters
   # obs. used (total)      444  
   data-arc span      6682 days (18.29 yr)  
   first obs. used      2001-01-21  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54288  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:12:51  

Additional Information
 Earth MOID = .671334 au 
 Jupiter MOID = 2.57482 au 
 T_jup = 3.559 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456856.5 (2014-Jul-18.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2600773794369005 5.2826e-08  
q 1.677739530260596 1.1983e-07 au
tp 2456541.692134541506
(2013-Sep-06.19213454)
3.3109e-05 TDB
node 311.348109096788 3.4495e-05 deg
peri 35.24277479635394 3.5702e-05 deg
i 7.443501012414294 6.3432e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      444  
   data-arc span      6682 days (18.29 yr)  
   first obs. used      2001-01-21  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54288  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:12:51  

Additional Information
 Jupiter MOID = 2.57482 au 
 T_jup = 3.559 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.790631293335477E-15 -6.311501597413756E-15 -2.94821454524905E-13 1.70473254937333E-14 -1.402979128570194E-13 -1.848788198138965E-16
q -6.311501597413756E-15 1.435842080237993E-14 7.782873939164805E-13 -3.93628584442074E-14 3.464350886140801E-13 1.045402608777034E-15
tp -2.94821454524905E-13 7.782873939164805E-13 1.096175380009417E-9 -2.375961458986845E-12 3.142570586720833E-10 6.899403322924211E-13
node 1.70473254937333E-14 -3.93628584442074E-14 -2.375961458986845E-12 1.189893915540319E-9 -1.180480709176188E-9 2.013158903580046E-11
peri -1.402979128570194E-13 3.464350886140801E-13 3.142570586720833E-10 -1.180480709176188E-9 1.274660871642332E-9 -1.979098811461142E-11
i -1.848788198138965E-16 1.045402608777034E-15 6.899403322924211E-13 2.013158903580046E-11 -1.979098811461142E-11 4.023616484105435E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO320501  
rotation period rot_per 4.802 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

136209 (2003 WF20)          Discovered 2003-Nov-19 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-15 18:45 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin