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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1769707206701516 3.2094e-08  
a 2.211268062250328 6.7249e-09 au
q 1.819938359678997 7.3017e-08 au
i 2.143765661742785 3.5021e-06 deg
node 327.7812181817046 8.8027e-05 deg
peri 333.4548017044069 8.8542e-05 deg
M 229.1965370659285 9.9655e-06 deg
tp 2459636.892479818744
(2022-Feb-26.39247982)
3.4052e-05 TDB
period 1201.048421890262
3.29
5.4789e-06
1.5e-08
d
yr
n .2997381233251331 1.3673e-09 deg/d
Q 2.602597764821658 7.915e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1576  
   data-arc span      12527 days (34.30 yr)  
   first obs. used      1986-11-30  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53618  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:23:45  

Additional Information
 Earth MOID = .802779 au 
 Jupiter MOID = 2.61224 au 
 T_jup = 3.635 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.89   n/a E2021B10  
diameter diameter 2.683 km 0.478 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.269   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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