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JPL Small-Body Database Browser
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20351 Kaborchardt (1998 HN127)
Classification: Main-belt Asteroid          SPK-ID: 2020351
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1096994756410352 5.0944e-08  
a 2.739381179247372 1.3882e-08 au
q 2.438872500303015 1.37e-07 au
i 3.832406148050369 4.35e-06 deg
node 222.7329376137295 6.1421e-05 deg
peri 130.0591635878469 6.3774e-05 deg
M 168.4300698851789 2.0177e-05 deg
tp 2458225.691714211109
(2018-Apr-17.19171421)
9.0463e-05 TDB
period 1656.064045298751
4.53
1.2588e-05
3.446e-08
d
yr
n .2173828971300784 1.6524e-09 deg/d
Q 3.039889858191729 1.5405e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1371  
   data-arc span      10364 days (28.38 yr)  
   first obs. used      1991-12-07  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51542  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:11:29  

Additional Information
 Earth MOID = 1.43588 au 
 Jupiter MOID = 2.38548 au 
 T_jup = 3.339 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456990.5 (2014-Nov-29.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1080531582824179 5.0472e-08  
q 2.444032291192739 1.3526e-07 au
tp 2456561.786025468430
(2013-Sep-26.28602547)
8.8395e-05 TDB
node 222.997261128853 6.1651e-05 deg
peri 128.5227160497819 6.4104e-05 deg
i 3.823913149774835 4.3394e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1371  
   data-arc span      10364 days (28.38 yr)  
   first obs. used      1991-12-07  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51542  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:11:29  

Additional Information
 Jupiter MOID = 2.38548 au 
 T_jup = 3.339 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.547416424353094E-15 -6.799801299075504E-15 1.720858712323269E-12 7.493527996124944E-15 2.968640108039629E-13 1.081504832114942E-15
q -6.799801299075504E-15 1.829469354851159E-14 -4.40774321726621E-12 -1.890316060527681E-14 -7.488754743503509E-13 -2.809201502081076E-15
tp 1.720858712323269E-12 -4.40774321726621E-12 7.813695225780247E-9 1.439641909992553E-11 1.573439614577032E-9 3.013085818170658E-14
node 7.493527996124944E-15 -1.890316060527681E-14 1.439641909992553E-11 3.800902196987215E-9 -3.789160000056421E-9 -9.266520760038907E-11
peri 2.968640108039629E-13 -7.488754743503509E-13 1.573439614577032E-9 -3.789160000056421E-9 4.109361484803702E-9 9.24390202041893E-11
i 1.081504832114942E-15 -2.809201502081076E-15 3.013085818170658E-14 -9.266520760038907E-11 9.24390202041893E-11 1.883072002327191E-11

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 14.5   n/a MPO378762  
diameter diameter 3.764 km 0.652 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.238   0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20351 Kaborchardt           Discovered 1998 Apr. 18 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Kasey Lynn Borchardt (b. 1990) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her mathematics project. She attends the Vernon Middle School, Vernon, Texas.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041028/MPCPages.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1998 HN127 = 2000 WE57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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