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39746 (1997 BW)
Classification: Main-belt Asteroid          SPK-ID: 2039746
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1558761344113248 8.865e-08  
a 2.650439327809658 2.9679e-08 AU
q 2.237299090898938 2.398e-07 AU
i 13.68557585949183 9.7171e-06 deg
node 122.7868078362258 3.5241e-05 deg
peri 306.913719557118 4.9165e-05 deg
M 44.10489721367668 2.8913e-05 deg
tp 2456607.410107385523
(2013-Nov-10.91010739)
0.0001271 JED
period 1576.069002143743
4.32
2.6473e-05
7.248e-08
d
yr
n .228416395164383 3.8367e-09 deg/d
Q 3.063579564720377 3.4306e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      428  
   data-arc span      6301 days (17.25 yr)  
   first obs. used      1996-12-17  
   last obs. used      2014-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5693  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:42:12  

Additional Information
 Earth MOID = 1.27964 AU 
 T_jup = 3.333 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6 mag n/a MPO244527  

39746 (1997 BW)          Discovered 1997-Jan-18 by BAO Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 BW = 2000 WF163 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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