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 ]  
39161 (2000 WH117)
Classification: Main-belt Asteroid          SPK-ID: 2039161
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2095368082472643 3.7166e-08  
a 2.396284309510189 8.8134e-09 au
q 1.894174543642425 8.8771e-08 au
i 4.972118695218718 4.4067e-06 deg
node 345.5129538776014 3.4123e-05 deg
peri 325.1695784171039 3.5078e-05 deg
M 209.1486524238 9.0679e-06 deg
tp 2459568.244108661545
(2021-Dec-19.74410866)
3.5783e-05 TDB
period 1354.895944929582
3.71
7.4748e-06
2.046e-08
d
yr
n .2657030610706495 1.4659e-09 deg/d
Q 2.898394075377953 1.066e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1337  
   data-arc span      14032 days (38.42 yr)  
   first obs. used      1981-11-24  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54442  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:40:44  

Additional Information
 Earth MOID = .88257 au 
 Jupiter MOID = 2.38775 au 
 T_jup = 3.494 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456983.5 (2014-Nov-22.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2106986508372112 3.7268e-08  
q 1.890924945993326 8.9116e-08 au
tp 2456858.071542523627
(2014-Jul-19.57154252)
2.981e-05 TDB
node 345.5628362079178 3.4081e-05 deg
peri 325.0466300732574 3.5024e-05 deg
i 4.977318540625148 4.4094e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1337  
   data-arc span      14032 days (38.42 yr)  
   first obs. used      1981-11-24  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54442  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:40:44  

Additional Information
 Jupiter MOID = 2.38775 au 
 T_jup = 3.494 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.388917124407126E-15 -3.311237215369043E-15 4.474502211631879E-13 -9.547036152138831E-16 1.070463656042157E-13 -1.631211616212534E-15
q -3.311237215369043E-15 7.941715642058087E-15 -1.037993934260604E-12 2.503750609817643E-15 -2.469823228617119E-13 3.977080449117077E-15
tp 4.474502211631879E-13 -1.037993934260604E-12 8.886544151323016E-10 1.362317629768857E-12 2.463291244734667E-10 -1.535715457654377E-12
node -9.547036152138831E-16 2.503750609817643E-15 1.362317629768857E-12 1.161545624054401E-9 -1.156234191757698E-9 -7.961207989991625E-12
peri 1.070463656042157E-13 -2.469823228617119E-13 2.463291244734667E-10 -1.156234191757698E-9 1.226697012946307E-9 7.530638698320787E-12
i -1.631211616212534E-15 3.977080449117077E-15 -1.535715457654377E-12 -7.961207989991625E-12 7.530638698320787E-12 1.94425905712196E-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 14.9   n/a MPO412458  

39161 (2000 WH117)          Discovered 2000-Nov-20 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 WH117 = 1981 WJ5 = 1998 BL22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-04 02:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin