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18774 Lavanture (1999 JT38)
Classification: Main-belt Asteroid          SPK-ID: 2018774
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1166567081593945 3.306e-08  
a 2.405478459572944 7.6643e-09 au
q 2.124863260930833 8.0549e-08 au
i 2.791641501332504 3.7912e-06 deg
node 16.56421263787822 7.0119e-05 deg
peri 204.1719722884852 7.1784e-05 deg
M 291.1093803984518 1.616e-05 deg
tp 2459461.270359251501
(2021-Sep-03.77035925)
6.1327e-05 TDB
period 1362.701190285573
3.73
6.5127e-06
1.783e-08
d
yr
n .264181173808586 1.2626e-09 deg/d
Q 2.686093658215055 8.5584e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1898  
   data-arc span      13465 days (36.87 yr)  
   first obs. used      1984-05-03  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45296  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:37:39  

Additional Information
 Earth MOID = 1.11597 au 
 Jupiter MOID = 2.28669 au 
 T_jup = 3.512 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.55   n/a E2021B10  
diameter diameter 7.661 km 0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18774 Lavanture           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Douglas George Lavanture (b. 1986) was awarded third place in the 2003 Intel International Science and Engineering Fair for his engineering project. He attends the John Adams High School, South Bend, Indiana, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040830/MPCPages.arcLast Updated: 2004-09-06

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Alternate Designations
 1999 JT38 = 1984 JF = 2000 RY1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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