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71944 (2000 WB87)
Classification: Main-belt Asteroid          SPK-ID: 2071944
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08763533539670827 3.9007e-08  
a 2.268815070972063 1.0258e-08 au
q 2.06998670127432 8.7658e-08 au
i 7.918001865672697 5.6086e-06 deg
node 61.85231033959036 2.7228e-05 deg
peri 53.46140657799613 4.5111e-05 deg
M 219.1349449861762 3.4305e-05 deg
tp 2459488.924952447012
(2021-Oct-01.42495245)
0.00011948 TDB
period 1248.237065350728
3.42
8.4652e-06
2.318e-08
d
yr
n .2884067538074969 1.9559e-09 deg/d
Q 2.467643440669806 1.1157e-08 au
  Orbit Determination Parameters
   # obs. used (total)      651  
   data-arc span      9364 days (25.64 yr)  
   first obs. used      1993-12-08  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52026  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:33:44  

Additional Information
 Earth MOID = 1.09727 au 
 Jupiter MOID = 2.61981 au 
 T_jup = 3.596 
[ 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 16.1   n/a MPO337803  
diameter diameter 3.561 km 0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71944 (2000 WB87)          Discovered 2000-Nov-20 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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