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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02573310233164864 6.7235e-08  
a 2.968414804759596 2.9018e-08 au
q 2.892028282825937 2.0125e-07 au
i 15.46389431455908 1.0119e-05 deg
node 163.497871437872 2.733e-05 deg
peri 269.050115212395 0.00020438 deg
M 268.6020409641386 0.00020295 deg
tp 2459474.763068990771
(2021-Sep-17.26306899)
0.0010541 TDB
period 1868.03629575237
5.11
2.7392e-05
7.5e-08
d
yr
n .1927157415616523 2.8259e-09 deg/d
Q 3.044801326693256 2.9765e-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 = 1.94192 au 
 Jupiter MOID = 2.01627 au 
 T_jup = 3.208 
[ 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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