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JPL Small-Body Database Browser
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19595 Lafer-Sousa (1999 NW31)
Classification: Main-belt Asteroid          SPK-ID: 2019595
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0522517370699277 3.4314e-08  
a 2.560677826229061 1.2686e-08 au
q 2.426877961732146 8.8509e-08 au
i 1.792536847599518 3.9383e-06 deg
node 138.9141163485154 0.00013242 deg
peri 155.3008603790665 0.00013957 deg
M 38.49735548023036 4.4296e-05 deg
tp 2458840.448689464126
(2019-Dec-22.94868946)
0.00018439 TDB
period 1496.686488569417
4.10
1.1123e-05
3.045e-08
d
yr
n .2405313355531792 1.7875e-09 deg/d
Q 2.694477690725976 1.3349e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1051  
   data-arc span      8183 days (22.40 yr)  
   first obs. used      1996-12-14  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55906  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:44:15  

Additional Information
 Earth MOID = 1.41094 au 
 Jupiter MOID = 2.38736 au 
 T_jup = 3.432 
[ 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 14.9   n/a MPO492960  
diameter diameter 2.873 km 0.212 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.257   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19595 Lafer-Sousa           Discovered 1999 July 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Luis Lafer-Sousa (b. 1989) is a finalist in the 2003 Discovery Channel Young Scientist Challenge, a middle school science competition, for his biochemistry, medicine, health and microbiology project. He attends the Keystone Junior High School, San Antonio, Texas.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20031010/MPCPages.arcLast Updated: 2003-10-10

Alternate Designations
 1999 NW31 = 1996 XK26 = 1998 FR35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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