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 ]  
(1998 WW31)
Classification: TransNeptunian Object          SPK-ID: 3031823
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09033029694395202 0.00016069  
a 44.53191039261014 0.014255 au
q 40.50932970336421 0.019976 au
i 6.811123725734776 0.00030262 deg
node 237.1199281296053 0.00029266 deg
peri 52.0206897130678 0.12667 deg
M 141.6495192102109 0.13645 deg
tp 2416491.635929548029
(1904-Jan-12.13592955)
21.42 TDB
period 108543.8987092191
297.18
52.118
0.1427
d
yr
n .003316630453494332 1.5925e-06 deg/d
Q 48.55449108185609 0.015542 au
  Orbit Determination Parameters
   # obs. used (total)      38  
   data-arc span      7647 days (20.94 yr)  
   first obs. used      1998-11-18  
   last obs. used      2019-10-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .34498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:49:19  

Additional Information
 Earth MOID = 39.4956 au 
 Jupiter MOID = 35.3476 au 
 T_jup = 5.903 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 6.7   n/a MPO230178  
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-08 11:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin