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
JPL Small-Body Database Browser
Search: [ help ]  
249496 (2009 WR249)
Classification: Main-belt Asteroid          SPK-ID: 2249496
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3152465055002663 1.0415e-07  
a 2.567394673596312 2.9536e-08 au
q 1.758032474505077 2.779e-07 au
i 33.38827184822077 1.4583e-05 deg
node 314.1607127081854 9.7563e-06 deg
peri 130.7893703531103 2.347e-05 deg
M 221.4175176265096 1.3176e-05 deg
tp 2459578.919887045578
(2021-Dec-30.41988705)
5.2485e-05 TDB
period 1502.579227692063
4.11
2.5929e-05
7.099e-08
d
yr
n .2395880319422184 4.1344e-09 deg/d
Q 3.376756872687546 3.8847e-08 au
  Orbit Determination Parameters
   # obs. used (total)      424  
   data-arc span      6441 days (17.63 yr)  
   first obs. used      2000-09-22  
   last obs. used      2018-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45055  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 09:56:18  

Additional Information
 Earth MOID = .867146 au 
 Jupiter MOID = 2.05569 au 
 T_jup = 3.140 
[ 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 15.6   n/a MPO437159  
diameter diameter 2.294 km 0.372 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.212   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249496 (2009 WR249)          Discovered 2009-Nov-26 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

Alternate Designations
 2009 WR249 = 2000 ST45 = 2008 PJ6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-02 20:14 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin