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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1769358006661479 3.4162e-08  
a 2.211391180639249 6.9602e-09 au
q 1.820116911506786 7.6974e-08 au
i 2.143676862213079 3.5924e-06 deg
node 327.7818405390054 9.6801e-05 deg
peri 333.4165474466164 9.7327e-05 deg
M 169.3027568320725 1.0045e-05 deg
tp 2458435.617245878933
(2018-Nov-13.11724588)
3.2845e-05 TDB
period 1201.148730763375
3.29
5.6708e-06
1.553e-08
d
yr
n .2997130919592334 1.415e-09 deg/d
Q 2.602665449771713 8.1917e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1460  
   data-arc span      12180 days (33.35 yr)  
   first obs. used      1986-11-30  
   last obs. used      2020-04-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53434  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:52:33  

Additional Information
 Earth MOID = .804942 au 
 Jupiter MOID = 2.61264 au 
 T_jup = 3.635 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO452346  
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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