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39171 (2000 WE145)
Classification: Main-belt Asteroid          SPK-ID: 2039171
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02507128534704399 6.9666e-08  
a 2.972116930406491 2.9314e-08 au
q 2.897602138759489 2.0846e-07 au
i 15.44961948295289 1.0117e-05 deg
node 163.5719993035802 2.7343e-05 deg
peri 266.3561041694973 0.00020594 deg
M 194.2423483586327 0.00020446 deg
tp 2459462.224317720308
(2021-Sep-04.72431772)
0.0010646 TDB
period 1871.53203069324
5.12
2.7689e-05
7.581e-08
d
yr
n .192355778098359 2.8458e-09 deg/d
Q 3.046631722053493 3.0049e-08 au
  Orbit Determination Parameters
   # obs. used (total)      482  
   data-arc span      9601 days (26.29 yr)  
   first obs. used      1992-03-02  
   last obs. used      2018-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61046  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 19:31:56  

Additional Information
 Earth MOID = 1.94294 au 
 Jupiter MOID = 2.01709 au 
 T_jup = 3.207 
[ 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 14.7   n/a MPO347802  
diameter diameter 6.907 km 0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39171 (2000 WE145)          Discovered 2000-Nov-22 by JPL/NEAT at Haleakala
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 WE145 = 1992 ER26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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