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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1363030847687637 3.7573e-08  
a 3.103239947717857 1.549e-08 au
q 2.680258770066257 1.2305e-07 au
i 1.181709608740986 4.2727e-06 deg
node 9.884189708985595 0.00016691 deg
peri 308.947107308682 0.00016755 deg
M 343.2938994281719 1.492e-05 deg
tp 2459489.160375016104
(2021-Oct-01.66037502)
8.2926e-05 TDB
period 1996.739745602238
5.47
1.495e-05
4.093e-08
d
yr
n .1802939019934319 1.3499e-09 deg/d
Q 3.526221125369458 1.7601e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1488  
   data-arc span      8898 days (24.36 yr)  
   first obs. used      1997-02-08  
   last obs. used      2021-06-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54493  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:39:56  

Additional Information
 Earth MOID = 1.66668 au 
 Jupiter MOID = 1.76708 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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