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21428 Junehokim (1998 FR103)
Classification: Main-belt Asteroid          SPK-ID: 2021428
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06795089026125035 3.1532e-08  
a 2.246991062660152 7.2337e-09 au
q 2.094306019543322 7.0814e-08 au
i 3.766655911877089 3.539e-06 deg
node 298.0204363614007 5.7235e-05 deg
peri 295.2629637449544 6.3877e-05 deg
M 285.4602232673029 2.9414e-05 deg
tp 2459651.233481495328
(2022-Mar-12.73348150)
0.00010088 TDB
period 1230.270029747643
3.37
5.9409e-06
1.627e-08
d
yr
n .2926186863820819 1.413e-09 deg/d
Q 2.399676105776982 7.7253e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1324  
   data-arc span      10513 days (28.78 yr)  
   first obs. used      1992-07-26  
   last obs. used      2021-05-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52881  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:33:05  

Additional Information
 Earth MOID = 1.0864 au 
 Jupiter MOID = 2.59416 au 
 T_jup = 3.624 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457111.5 (2015-Mar-30.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06783320791813884 3.1547e-08  
q 2.094129965532737 7.082e-08 au
tp 2457192.001594363626
(2015-Jun-18.50159436)
9.8201e-05 TDB
node 298.0705036369155 5.7269e-05 deg
peri 295.512623925196 6.3936e-05 deg
i 3.765590582970442 3.5382e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1324  
   data-arc span      10513 days (28.78 yr)  
   first obs. used      1992-07-26  
   last obs. used      2021-05-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52881  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:33:05  

Additional Information
 Jupiter MOID = 2.59416 au 
 T_jup = 3.624 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.952298163959772E-16 -2.224100275451798E-15 -4.437317702034753E-13 -2.52255009102527E-15 -1.237847326084337E-13 -5.698953135723159E-16
q -2.224100275451798E-15 5.01543054360627E-15 1.117562307585706E-12 5.222941778308954E-15 3.123650722061749E-13 1.354001538523856E-15
tp -4.437317702034753E-13 1.117562307585706E-12 9.643463866608996E-9 1.905877098390296E-11 2.805051428350868E-9 5.38320354959325E-13
node -2.52255009102527E-15 5.222941778308954E-15 1.905877098390296E-11 3.279793893428852E-9 -3.266783605726405E-9 2.717197330804327E-11
peri -1.237847326084337E-13 3.123650722061749E-13 2.805051428350868E-9 -3.266783605726405E-9 4.087798997458787E-9 -2.695780401933696E-11
i -5.698953135723159E-16 1.354001538523856E-15 5.38320354959325E-13 2.717197330804327E-11 -2.695780401933696E-11 1.251860034100849E-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 15.35   n/a E2021B10  

21428 Junehokim           Discovered 1998 Mar. 31 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
June-Ho Kim (b. 1987) is a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors, for his medicine and health project. He attends the Monta Vista High School, Cupertino, California.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050224/MPCPages.arcLast Updated: 2005-02-28

Alternate Designations
 1998 FR103 = 1992 OY3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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