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18697 Kathanson (1998 HB39)
Classification: Main-belt Asteroid          SPK-ID: 2018697
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1358043322628528 3.7872e-08  
a 3.100982370066204 1.7223e-08 au
q 2.679855529940484 1.2437e-07 au
i 1.181730634537695 4.6294e-06 deg
node 9.889926994893177 0.0001685 deg
peri 309.1220748645765 0.00016926 deg
M 307.7570081217058 1.7064e-05 deg
tp 2459489.949572330529
(2021-Oct-02.44957233)
9.5477e-05 TDB
period 1994.561228073236
5.46
1.6617e-05
4.549e-08
d
yr
n .1804908242138865 1.5037e-09 deg/d
Q 3.522109210191924 1.9562e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1426  
   data-arc span      8557 days (23.43 yr)  
   first obs. used      1997-02-08  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54939  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:13:25  

Additional Information
 Earth MOID = 1.665 au 
 Jupiter MOID = 1.77239 au 
 T_jup = 3.207 
[ 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 14.01   n/a E2021B10  
diameter diameter 5.427 km 0.272 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.104   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18697 Kathanson           Discovered 1998 Apr. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Kathleen Suzanne Hanson (b. 1986) was awarded third place in the 2003 Intel International Science and Engineering Fair for her botany project. She attends the Clear Brook High School, Friendswood, Texas, 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

[ show close-approach data ]
Alternate Designations
 1998 HB39 = 1999 NY18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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