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21635 Micahtoll (1999 NU19)
Classification: Main-belt Asteroid          SPK-ID: 2021635
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1985079121339413 3.1848e-08  
a 2.436582035418987 9.4662e-09 au
q 1.952901222824895 7.9563e-08 au
i 1.763847814178732 4.1895e-06 deg
node 245.7424049014673 0.00011958 deg
peri 86.84533064533832 0.0001201 deg
M 201.9765323731424 1.2461e-05 deg
tp 2459810.302317533521
(2022-Aug-18.80231753)
4.9972e-05 TDB
period 1389.216662619019
3.80
8.0957e-06
2.216e-08
d
yr
n .2591388439880287 1.5101e-09 deg/d
Q 2.920262848013079 1.1345e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1118  
   data-arc span      10277 days (28.14 yr)  
   first obs. used      1992-11-24  
   last obs. used      2021-01-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53111  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:53:43  

Additional Information
 Earth MOID = .941587 au 
 Jupiter MOID = 2.44892 au 
 T_jup = 3.476 
[ 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 15.02   n/a E2021B10  
diameter diameter 2.240 km 0.278 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.386   0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21635 Micahtoll           Discovered 1999 July 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Micah Lathaniel Toll (b. 1989) was awarded second place in the 2006 Intel International Science and Engineering Fair for his engineering project. He attends the Cedar Crest High School, Lebanon, Pennsylvania, 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: 20060711/MPCPages.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1999 NU19 = 2000 YH48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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