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100750 (1998 EX8)
Classification: Main-belt Asteroid          SPK-ID: 2100750
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2145954821462091 3.5372e-08  
a 2.677665007184945 1.0336e-08 au
q 2.103050193942059 9.2223e-08 au
i 11.39833823609083 6.3963e-06 deg
node 37.83908577684438 1.8612e-05 deg
peri 99.76111512626807 2.494e-05 deg
M 99.71163901967726 1.5162e-05 deg
tp 2458757.222032538375
(2019-Sep-30.72203254)
6.6494e-05 TDB
period 1600.415657140016
4.38
9.2662e-06
2.537e-08
d
yr
n .2249415633956802 1.3024e-09 deg/d
Q 3.252279820427831 1.2554e-08 au
  Orbit Determination Parameters
   # obs. used (total)      960  
   data-arc span      8148 days (22.31 yr)  
   first obs. used      1998-03-06  
   last obs. used      2020-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49419  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:33:36  

Additional Information
 Earth MOID = 1.1509 au 
 Jupiter MOID = 1.89591 au 
 T_jup = 3.317 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457386.5 (2015-Dec-30.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2157557574995764 3.5385e-08  
q 2.099453565101058 9.2541e-08 au
tp 2457157.450253172762
(2015-May-14.95025317)
6.3613e-05 TDB
node 37.85323275786903 1.8611e-05 deg
peri 99.78711596972829 2.4863e-05 deg
i 11.4009333540628 6.3975e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      960  
   data-arc span      8148 days (22.31 yr)  
   first obs. used      1998-03-06  
   last obs. used      2020-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49419  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:33:36  

Additional Information
 Jupiter MOID = 1.89591 au 
 T_jup = 3.317 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.252129152240477E-15 -3.263385565219116E-15 8.874310475588042E-13 -1.754641120141388E-15 2.186120978213382E-13 -2.671104778015078E-15
q -3.263385565219116E-15 8.56391605142796E-15 -2.285406990381203E-12 3.219472080556125E-15 -5.596269492902307E-13 8.076500009912879E-15
tp 8.874310475588042E-13 -2.285406990381203E-12 4.046589379673431E-9 -1.79778577725012E-11 1.056114948669897E-9 -5.121607471722094E-12
node -1.754641120141388E-15 3.219472080556125E-15 -1.79778577725012E-11 3.463820931359087E-10 -3.437006416606695E-10 -2.234786982509786E-11
peri 2.186120978213382E-13 -5.596269492902307E-13 1.056114948669897E-9 -3.437006416606695E-10 6.181587042239264E-10 2.094157535183312E-11
i -2.671104778015078E-15 8.076500009912879E-15 -5.121607471722094E-12 -2.234786982509786E-11 2.094157535183312E-11 4.092790544091752E-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 14.89   n/a E2021B55  

100750 (1998 EX8)          Discovered 1998-Mar-06 by Kagawa, T. at Gekko
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 EX8 = 2001 TO43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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