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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1766498840234267 5.3986e-08  
a 2.675575054508649 2.2507e-08 AU
q 2.202935031433723 1.4637e-07 AU
i 3.325982143133472 7.4785e-06 deg
node 196.8905102128745 9.8051e-05 deg
peri 280.451592947056 0.00010179 deg
M 32.09130843005065 2.2251e-05 deg
tp 2456658.001905173221
(2013-Dec-31.50190517)
9.9102e-05 JED
period 1598.542304669736
4.38
2.017e-05
5.522e-08
d
yr
n .2252051753327712 2.8416e-09 deg/d
Q 3.148215077583576 2.6482e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      916  
   data-arc span      11850 days (32.44 yr)  
   first obs. used      1981-09-28  
   last obs. used      2014-03-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56045  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 10:59:26  

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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