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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1142194883700742 4.1123e-08  
a 2.753287810682162 1.7065e-08 au
q 2.438808685610483 1.1558e-07 au
i 9.741229182618241 4.6219e-06 deg
node 69.56350331694617 3.1328e-05 deg
peri 233.3842330249075 4.1433e-05 deg
M 218.8410728133806 3.0267e-05 deg
tp 2459654.807190880163
(2022-Mar-16.30719088)
0.00014277 TDB
period 1668.690697864605
4.57
1.5514e-05
4.248e-08
d
yr
n .2157380037299218 2.0057e-09 deg/d
Q 3.06776693575384 1.9014e-08 au
  Orbit Determination Parameters
   # obs. used (total)      962  
   data-arc span      8844 days (24.21 yr)  
   first obs. used      1995-11-19  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57267  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:06:49  

Additional Information
 Earth MOID = 1.43777 au 
 Jupiter MOID = 2.13606 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-Apr-02 09:41 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin