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249347 (2008 WE64)
Classification: Main-belt Asteroid          SPK-ID: 2249347
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1122271555062542 5.8629e-08  
a 3.111470348620465 3.6538e-08 au
q 2.762278881952737 1.863e-07 au
i 10.80823135000315 5.5869e-06 deg
node 267.3988727901144 3.4024e-05 deg
peri 137.9881832416101 4.4196e-05 deg
M 48.58781401001024 2.7223e-05 deg
tp 2458729.934893827220
(2019-Sep-03.43489383)
0.00015061 TDB
period 2004.688628348938
5.49
3.5312e-05
9.668e-08
d
yr
n .1795790103805279 3.1632e-09 deg/d
Q 3.460661815288193 4.0639e-08 au
  Orbit Determination Parameters
   # obs. used (total)      378  
   data-arc span      8096 days (22.17 yr)  
   first obs. used      1997-11-28  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51852  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:22:01  

Additional Information
 Earth MOID = 1.78388 au 
 Jupiter MOID = 1.90937 au 
 T_jup = 3.182 
[ 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 15.3   n/a MPO503176  
diameter diameter 6.428 km 1.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.030   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249347 (2008 WE64)          Discovered 2008-Nov-18 by CSS at Catalina
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2008 WE64 = 2002 TH221 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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