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 ]  
136039 (2002 WR4)
Classification: Main-belt Asteroid          SPK-ID: 2136039
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1848939915929059 8.0975e-08  
a 2.736071815622207 2.7134e-08 au
q 2.230188576346968 2.3123e-07 au
i 8.194135804892605 6.5362e-06 deg
node 272.8093599512379 4.4638e-05 deg
peri 54.86627443421976 4.7332e-05 deg
M 285.6912599490323 1.3853e-05 deg
tp 2458941.714173200856
(2020-Apr-02.21417320)
6.5267e-05 TDB
period 1653.063990427713
4.53
2.4591e-05
6.733e-08
d
yr
n .2177774133878833 3.2396e-09 deg/d
Q 3.241955054897447 3.2151e-08 au
  Orbit Determination Parameters
   # obs. used (total)      333  
   data-arc span      6053 days (16.57 yr)  
   first obs. used      2002-10-05  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53604  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:12:37  

Additional Information
 Earth MOID = 1.22931 au 
 Jupiter MOID = 2.12519 au 
 T_jup = 3.312 
[ 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 15.4   n/a MPO436668  
diameter diameter 4.991 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136039 (2002 WR4)          Discovered 2002-Nov-21 by NEAT at Palomar
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin