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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08572717368490504 3.3245e-08  
a 2.20396994578095 5.8167e-09 au
q 2.015029831442676 7.4956e-08 au
i 5.441056092264112 3.3406e-06 deg
node 166.4426215542339 3.6754e-05 deg
peri 267.8268296637353 4.2496e-05 deg
M 96.97397666482868 2.0231e-05 deg
tp 2458878.571346256921
(2020-Jan-30.07134626)
6.7115e-05 TDB
period 1195.107381726483
3.27
4.7312e-06
1.295e-08
d
yr
n .301228162008283 1.1925e-09 deg/d
Q 2.392910060119224 6.3153e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1437  
   data-arc span      17283 days (47.32 yr)  
   first obs. used      1973-09-29  
   last obs. used      2021-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51519  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:52:19  

Additional Information
 Earth MOID = 1.03799 au 
 Jupiter MOID = 2.78093 au 
 T_jup = 3.652 
[ show covariance matrix ]

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 15.06   n/a E2021B10  

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

[ show close-approach data ]
Alternate Designations
 1998 FC9 = 4323 T-2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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