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21386 (1998 FC9)
Classification: Main-belt Asteroid          SPK-ID: 2021386
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08579072745216794 3.2189e-08  
a 2.203656473402812 5.1461e-09 au
q 2.014603181494905 7.2002e-08 au
i 5.441313255330706 3.0904e-06 deg
node 166.44448371 3.5024e-05 deg
peri 267.7300730699932 3.9756e-05 deg
M 156.1212575864192 1.8869e-05 deg
tp 2458878.328160234586
(2020-Jan-29.82816023)
6.2161e-05 TDB
period 1194.852419199166
3.27
4.1854e-06
1.146e-08
d
yr
n .3012924393133717 1.0554e-09 deg/d
Q 2.392709765310718 5.5875e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1687  
   data-arc span      17446 days (47.76 yr)  
   first obs. used      1973-09-29  
   last obs. used      2021-07-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4986  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:59:52  

Additional Information
 Earth MOID = 1.03784 au 
 Jupiter MOID = 2.78129 au 
 T_jup = 3.652 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457228.5 (2015-Jul-25.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08517615757002092 3.217e-08  
q 2.016456323930085 7.1953e-08 au
tp 2457681.922260048469
(2016-Oct-20.42226005)
6.1884e-05 TDB
node 166.49264572513 3.5004e-05 deg
peri 267.4211541005299 3.9816e-05 deg
i 5.442030223746916 3.0916e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1687  
   data-arc span      17446 days (47.76 yr)  
   first obs. used      1973-09-29  
   last obs. used      2021-07-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4986  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:59:52  

Additional Information
 Jupiter MOID = 2.78129 au 
 T_jup = 3.652 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.034907527954449E-15 -2.309950508825571E-15 -7.220024255578805E-13 3.050096830035443E-15 -2.425257028319867E-13 -2.748037371027381E-16
q -2.309950508825571E-15 5.177195064327117E-15 1.644257755435674E-12 -6.421428929538415E-15 5.485521499635518E-13 6.85923130940942E-16
tp -7.220024255578805E-13 1.644257755435674E-12 3.829578066809323E-9 -6.641371678431683E-12 1.183566729847389E-9 -1.465499518350292E-13
node 3.050096830035443E-15 -6.421428929538415E-15 -6.641371678431683E-12 1.22529697910887E-9 -1.221669363933669E-9 3.253531604576565E-11
peri -2.425257028319867E-13 5.485521499635518E-13 1.183566729847389E-9 -1.221669363933669E-9 1.58529145684347E-9 -3.244489516047861E-11
i -2.748037371027381E-16 6.85923130940942E-16 -1.465499518350292E-13 3.253531604576565E-11 -3.244489516047861E-11 9.557710116936808E-12

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.10   n/a MPO636385  

21386 (1998 FC9)          Discovered 1998-Mar-22 by Spacewatch at Kitt Peak
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FC9 = 4323 T-2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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