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39664 (1995 WW4)
Classification: Main-belt Asteroid          SPK-ID: 2039664
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04985489577142915 7.279e-08  
a 2.727073568121687 1.8386e-08 au
q 2.591115599621961 2.0476e-07 au
i 1.27752043682445 4.747e-06 deg
node 278.3886873427113 0.00027181 deg
peri 252.4116349169001 0.00027653 deg
M 325.1814484228797 4.9053e-05 deg
tp 2458759.593306492598
(2019-Oct-03.09330649)
0.00022412 TDB
period 1644.915935416756
4.50
1.6635e-05
4.554e-08
d
yr
n .2188561690289604 2.2133e-09 deg/d
Q 2.863031536621413 1.9303e-08 au
  Orbit Determination Parameters
   # obs. used (total)      615  
   data-arc span      9901 days (27.11 yr)  
   first obs. used      1991-12-31  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57488  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:07:54  

Additional Information
 Earth MOID = 1.5972 au 
 Jupiter MOID = 2.10642 au 
 T_jup = 3.354 
[ 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 15.5   n/a MPO279916  

39664 (1995 WW4)          Discovered 1995-Nov-20 by Niijima, T., Urata, T. at Ojima
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1995 WW4 = 2000 YY131 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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