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 ]  
71947 (2000 WW87)
Classification: Main-belt Asteroid          SPK-ID: 2071947
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0875622411659334 3.3774e-08  
a 2.363706453840067 1.1373e-08 au
q 2.156735019283449 7.9665e-08 au
i 6.409198868723886 4.8091e-06 deg
node 58.66131125719613 4.1871e-05 deg
peri 33.01553481126351 5.5459e-05 deg
M 30.75140388936423 3.5213e-05 deg
tp 2458487.116153819842
(2019-Jan-03.61615382)
0.00012972 TDB
period 1327.360037665612
3.63
9.5795e-06
2.623e-08
d
yr
n .2712150356983181 1.9573e-09 deg/d
Q 2.570677888396684 1.2368e-08 au
  Orbit Determination Parameters
   # obs. used (total)      957  
   data-arc span      9176 days (25.12 yr)  
   first obs. used      1994-02-12  
   last obs. used      2019-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51371  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:24:34  

Additional Information
 Earth MOID = 1.17621 au 
 Jupiter MOID = 2.57681 au 
 T_jup = 3.536 
[ 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 15.2   n/a MPO417324  
diameter diameter 2.555 km 0.542 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.270   0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71947 (2000 WW87)          Discovered 2000-Nov-20 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 WW87 = 1998 HE71 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin