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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
344355 (2001 WK81)
Classification: Main-belt Asteroid          SPK-ID: 2344355
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1965164641888613 4.9756e-08  
a 2.369076993269406 1.06e-08 au
q 1.903514359160924 1.1964e-07 au
i 1.585590340698285 5.4746e-06 deg
node 164.9915205113005 0.00015203 deg
peri 212.4153594653321 0.00015275 deg
M 166.6007877630013 1.1573e-05 deg
tp 2458780.129649485790
(2019-Oct-23.62964949)
4.2722e-05 TDB
period 1331.886416412214
3.65
8.9391e-06
2.447e-08
d
yr
n .2702933189826762 1.8141e-09 deg/d
Q 2.834639627377889 1.2683e-08 au
  Orbit Determination Parameters
   # obs. used (total)      276  
   data-arc span      7106 days (19.46 yr)  
   first obs. used      2001-10-24  
   last obs. used      2021-04-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57969  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 06:34:10  

Additional Information
 Earth MOID = .904634 au 
 Jupiter MOID = 2.62895 au 
 T_jup = 3.519 
[ 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 17.47   n/a MPCxxxxx  

344355 (2001 WK81)          Discovered 2001-Nov-20 by LINEAR at Socorro
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-27 02:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin