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 ]  
385482 (2003 WK81)
Classification: Main-belt Asteroid          SPK-ID: 2385482
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2212161067289472 6.6192e-08  
a 2.801843550529969 2.0429e-08 au
q 2.182030628618119 1.9047e-07 au
i 8.319798714808654 6.06e-06 deg
node 263.1610693962861 4.28e-05 deg
peri 141.3579204623702 4.5002e-05 deg
M 283.1714675792815 1.3283e-05 deg
tp 2459762.081563331817
(2022-Jul-01.58156333)
6.5353e-05 TDB
period 1713.027161299295
4.69
1.8735e-05
5.129e-08
d
yr
n .2101542860108228 2.2984e-09 deg/d
Q 3.421656472441819 2.4948e-08 au
  Orbit Determination Parameters
   # obs. used (total)      231  
   data-arc span      7777 days (21.29 yr)  
   first obs. used      2000-03-04  
   last obs. used      2021-06-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5541  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 16:32:24  

Additional Information
 Earth MOID = 1.19841 au 
 Jupiter MOID = 2.00866 au 
 T_jup = 3.273 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457625.5 (2016-Aug-25.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2225905861995851 6.563e-08  
q 2.175497108596037 1.8804e-07 au
tp 2458053.748507585708
(2017-Oct-27.24850759)
5.7533e-05 TDB
node 263.1851966455322 4.2756e-05 deg
peri 141.8436444334656 4.4946e-05 deg
i 8.328754600112521 6.0669e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      231  
   data-arc span      7777 days (21.29 yr)  
   first obs. used      2000-03-04  
   last obs. used      2021-06-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5541  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 16:32:24  

Additional Information
 Jupiter MOID = 2.00866 au 
 T_jup = 3.273 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.307317420671734E-15 -1.229995913971247E-14 -1.121575784299788E-12 -7.837659395057575E-14 -2.974061680597733E-13 -4.747723896373828E-15
q -1.229995913971247E-14 3.536074184661869E-14 3.367411302012725E-12 2.263642937414423E-13 8.653421475872285E-13 1.42965300736761E-14
tp -1.121575784299788E-12 3.367411302012725E-12 3.310086210536463E-9 3.127255838476723E-11 8.373810567152959E-10 -2.038780085524486E-12
node -7.837659395057575E-14 2.263642937414423E-13 3.127255838476723E-11 1.828050539992215E-9 -1.798895373889611E-9 -6.743853097334034E-11
peri -2.974061680597733E-13 8.653421475872285E-13 8.373810567152959E-10 -1.798895373889611E-9 2.020160003768952E-9 6.625252605732809E-11
i -4.747723896373828E-15 1.42965300736761E-14 -2.038780085524486E-12 -6.743853097334034E-11 6.625252605732809E-11 3.680685636288943E-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 16.55   n/a E2021B25  

385482 (2003 WK81)          Discovered 2003-Nov-20 by LINEAR at Socorro
Reference: Last Updated: 2014-02-19

Alternate Designations
 2003 WK81 = 2012 RR40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-01 21:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin