Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
21386 (1998 FC9)
Classification: Main-belt Asteroid          SPK-ID: 2021386
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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 
[ show covariance matrix ]

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-20 18:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin