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12500 Desngai (1998 FB49)
Classification: Main-belt Asteroid          SPK-ID: 2012500
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .177367424105063 5.0182e-08  
a 2.21083276604887 9.9016e-09 au
q 1.81870305320771 1.1245e-07 au
i 2.144489242345864 5.6335e-06 deg
node 327.8470793036586 0.00011599 deg
peri 333.4161774932909 0.00011674 deg
M 109.5625950982251 1.3257e-05 deg
tp 2457235.080200278463
4.4583e-05 JED
period 1200.693793185668
n .2998266519266763 2.0142e-09 deg/d
Q 2.602962478890029 1.1658e-08 au
  Orbit Determination Parameters
   # obs. used (total)      990  
   data-arc span      10585 days (28.98 yr)  
   first obs. used      1986-11-30  
   last obs. used      2015-11-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54653  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:21:01  

Additional Information
 Earth MOID = .803158 au 
 Jupiter MOID = 2.60426 au 
 T_jup = 3.636 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9 mag n/a MPO350901  

12500 Desngai           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Desmond Ngai (b. 1985) is a finalist in the 2002 Intel International Science and Engineering Fair for his medicine and health project. He attends the Francis Libermann Catholic High School, Toronto, Ontario, Canada.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020724/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1998 FB49 = 1986 WZ9 = 1992 OW9 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2016-Apr-29 08:05 UT
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