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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 ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .176280735559167 4.7571e-08  
a 2.67587470934166 2.0382e-08 au
q 2.20416954731474 1.2608e-07 au
i 3.325924469575007 6.0765e-06 deg
node 196.8779671032876 8.8545e-05 deg
peri 280.5066399543058 9.0554e-05 deg
M 167.1944951478662 1.7371e-05 deg
tp 2456657.965626777659
(2013-Dec-31.46562678)
7.6513e-05 JED
period 1598.810858716568
4.38
1.8267e-05
5.001e-08
d
yr
n .2251673473677725 2.5726e-09 deg/d
Q 3.14757987136858 2.3975e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1055  
   data-arc span      12365 days (33.85 yr)  
   first obs. used      1981-09-28  
   last obs. used      2015-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52124  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:34:32  

Additional Information
 Earth MOID = 1.2232 au 
 Jupiter MOID = 1.96992 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 13.7 mag n/a MPO344398  
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
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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