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 ]  
56036 (1998 WH31)
Classification: Main-belt Asteroid          SPK-ID: 2056036
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .230141753511262 3.7188e-08  
a 2.287109040246902 9.3374e-09 au
q 1.760749755253021 8.496e-08 au
i 24.84912373472414 4.8701e-06 deg
node 125.358978878273 9.5032e-06 deg
peri 232.6320603222863 1.3285e-05 deg
M 15.93851913078626 1.0818e-05 deg
tp 2458544.566216130221
(2019-Mar-02.06621613)
3.7843e-05 TDB
period 1263.364684503598
3.46
7.7368e-06
2.118e-08
d
yr
n .2849533506957662 1.745e-09 deg/d
Q 2.813468325240784 1.1486e-08 au
  Orbit Determination Parameters
   # obs. used (total)      818  
   data-arc span      7684 days (21.04 yr)  
   first obs. used      1998-11-23  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59055  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:40:18  

Additional Information
 Earth MOID = .823082 au 
 Jupiter MOID = 2.717 au 
 T_jup = 3.446 
[ 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 15.0   n/a MPO449362  

56036 (1998 WH31)          Discovered 1998-Nov-23 by CSS at Catalina
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 WH31 = 2001 LO12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-23 05:01 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin