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JPL Small-Body Database Browser
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20338 Elainepappas (1998 HA86)
Classification: Main-belt Asteroid          SPK-ID: 2020338
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07268239066591982 3.4884e-08  
a 2.907100577619668 1.4826e-08 au
q 2.695805557731994 1.01e-07 au
i .9791582995287363 3.8547e-06 deg
node 333.8160983497458 0.00018332 deg
peri 331.6521981223612 0.00018475 deg
M 2.039041339909017 2.2828e-05 deg
tp 2458590.245557762930
(2019-Apr-16.74555776)
0.00011481 TDB
period 1810.458244809272
4.96
1.385e-05
3.792e-08
d
yr
n .1988446853343062 1.5212e-09 deg/d
Q 3.118395597507342 1.5904e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1315  
   data-arc span      14700 days (40.25 yr)  
   first obs. used      1979-07-24  
   last obs. used      2019-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54151  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:22:51  

Additional Information
 Earth MOID = 1.67997 au 
 Jupiter MOID = 2.04645 au 
 T_jup = 3.281 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456791.5 (2014-May-14.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07520147239737206 3.4878e-08  
q 2.689022066806729 1.0147e-07 au
tp 2456784.500214034969
(2014-May-07.00021404)
0.00011285 TDB
node 334.1344339222491 0.00018268 deg
peri 332.4377829317542 0.00018402 deg
i .9819216650683458 3.8575e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1315  
   data-arc span      14700 days (40.25 yr)  
   first obs. used      1979-07-24  
   last obs. used      2019-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54151  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:22:51  

Additional Information
 Jupiter MOID = 2.04645 au 
 T_jup = 3.281 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.216467751456567E-15 -3.507014458599815E-15 7.327717413991227E-13 1.059102698436586E-15 1.222707993605408E-13 1.142381834076344E-16
q -3.507014458599815E-15 1.02964882004981E-14 -2.45931237004378E-12 -5.101227823352185E-15 -4.169194181129179E-13 -2.491736877376519E-16
tp 7.327717413991227E-13 -2.45931237004378E-12 1.273570838264751E-8 -1.113471694559713E-11 2.506348115037432E-9 -7.006980783580607E-14
node 1.059102698436586E-15 -5.101227823352185E-15 -1.113471694559713E-11 3.337219656908149E-8 -3.336934352910154E-8 -3.535428884636704E-11
peri 1.222707993605408E-13 -4.169194181129179E-13 2.506348115037432E-9 -3.336934352910154E-8 3.386182736902881E-8 3.533316417286255E-11
i 1.142381834076344E-16 -2.491736877376519E-16 -7.006980783580607E-14 -3.535428884636704E-11 3.533316417286255E-11 1.488058342025306E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO431733  

20338 Elainepappas           Discovered 1998 Apr. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Elaine Pappas mentored a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors. She teaches at the Cedar Shoals High School, Athens, Georgia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040415/MPCPages.arcLast Updated: 2004-04-20

Alternate Designations
 1998 HA86 = 1979 OJ8 = 2000 VO26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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