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11990 (1995 WM6)
Classification: Main-belt Asteroid          SPK-ID: 2011990
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .1766498840228589 5.3986e-08  
a 2.675575053331118 2.2454e-08 AU
q 2.202935030465722 1.4637e-07 AU
i 3.325982085179933 7.4335e-06 deg
node 196.8905097352313 9.7908e-05 deg
peri 280.4515922597147 0.00010164 deg
M 32.0913099872048 2.2161e-05 deg
tp 2456658.001898352912
(2013-Dec-31.50189835)
9.8712e-05 JED
period 1598.542303614449
4.38
2.0123e-05
5.509e-08
d
yr
n .2252051754814417 2.8349e-09 deg/d
Q 3.148215076196514 2.642e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      922  
   data-arc span      11864 days (32.48 yr)  
   first obs. used      1981-09-28  
   last obs. used      2014-03-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56047  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:01:29  

Additional Information
 Earth MOID = 1.22184 AU 
 T_jup = 3.354 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6 mag n/a MPO279642  
diameter diameter 10.89 km 0.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
geometric albedo albedo 0.0593   0.012 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

11990 (1995 WM6)          Discovered 1995-Nov-21 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1995 WM6 = 1986 TM3 = 1997 FA2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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