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39325 (2001 WA87)
Classification: Main-belt Asteroid          SPK-ID: 2039325
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2133607733680168 3.3543e-08  
a 2.586395836428727 1.0891e-08 au
q 2.034560420532475 8.9708e-08 au
i 5.713033608286153 4.0302e-06 deg
node 92.94772291965027 4.6976e-05 deg
peri 8.77652034975989 4.8794e-05 deg
M 76.75987838202242 1.4305e-05 deg
tp 2458276.553947018139
(2018-Jun-07.05394702)
5.9086e-05 TDB
period 1519.290826557422
4.16
9.596e-06
2.627e-08
d
yr
n .2369526582449839 1.4966e-09 deg/d
Q 3.138231252324978 1.3214e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1250  
   data-arc span      14002 days (38.34 yr)  
   first obs. used      1981-01-08  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50496  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:08:18  

Additional Information
 Earth MOID = 1.0518 au 
 Jupiter MOID = 2.02875 au 
 T_jup = 3.383 
[ 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 MPO340963  
diameter diameter 2.645 km 0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.629   0.100 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39325 (2001 WA87)          Discovered 2001-Nov-17 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2001 WA87 = 1981 AU2 = 1998 FF93 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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