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 ]  
39151 (2000 WA99)
Classification: Main-belt Asteroid          SPK-ID: 2039151
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1139533371393194 4.1146e-08  
a 2.753901434699046 1.771e-08 au
q 2.44008517606233 1.1594e-07 au
i 9.741972238797764 5.2751e-06 deg
node 69.56930087904638 3.3731e-05 deg
peri 233.2811866859422 4.4887e-05 deg
M 132.6840111518788 3.1628e-05 deg
tp 2457985.270563519773
(2017-Aug-19.77056352)
0.0001453 TDB
period 1669.248579464169
4.57
1.6102e-05
4.408e-08
d
yr
n .2156659016690974 2.0803e-09 deg/d
Q 3.067717693335762 1.9728e-08 au
  Orbit Determination Parameters
   # obs. used (total)      876  
   data-arc span      8724 days (23.89 yr)  
   first obs. used      1995-11-19  
   last obs. used      2019-10-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58994  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 05:47:41  

Additional Information
 Earth MOID = 1.43829 au 
 Jupiter MOID = 2.13442 au 
 T_jup = 3.314 
[ show covariance matrix ]

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 14.5   n/a MPO240516  
diameter diameter 3.797 km 0.811 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.162   0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39151 (2000 WA99)          Discovered 2000-Nov-21 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 WA99 = 1998 HM142 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-21 05:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin