Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1765127041591935 5.1594e-08  
a 2.675184151680823 2.3745e-08 AU
q 2.202980162943823 1.4112e-07 AU
i 3.326211444707699 7.0022e-06 deg
node 196.8886627591367 9.3154e-05 deg
peri 280.431693227693 9.6919e-05 deg
M 77.16928281720615 2.1256e-05 deg
tp 2456657.912971900784
(2013-Dec-31.41297190)
9.5606e-05 JED
period 1598.191995743402
4.38
2.1278e-05
5.826e-08
d
yr
n .2252545382274582 2.999e-09 deg/d
Q 3.147388140417824 2.7936e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      966  
   data-arc span      11938 days (32.68 yr)  
   first obs. used      1981-09-28  
   last obs. used      2014-06-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5356  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:48:39  

Additional Information
 Earth MOID = 1.22212 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-21 21:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin