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18409 (1993 FF36)
Classification: Main-belt Asteroid          SPK-ID: 2018409
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07128921596995401 3.7257e-08  
a 2.146426195879778 8.5774e-09 au
q 1.993409155238138 7.8756e-08 au
i 6.159914316158145 6.2198e-06 deg
node 171.5175458058678 3.5953e-05 deg
peri 88.95677616207841 6.0175e-05 deg
M 170.1917305443986 4.8488e-05 deg
tp 2458457.489383784399
(2018-Dec-04.98938378)
0.00015397 TDB
period 1148.609401951051
3.14
6.885e-06
1.885e-08
d
yr
n .3134224736350727 1.8787e-09 deg/d
Q 2.299443236521418 9.1889e-09 au
  Orbit Determination Parameters
   # obs. used (total)      733  
   data-arc span      15121 days (41.40 yr)  
   first obs. used      1978-09-02  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57118  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:25:20  

Additional Information
 Earth MOID = .989808 au 
 Jupiter MOID = 2.72809 au 
 T_jup = 3.698 
[ 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 16.3   n/a MPO449085  

18409 (1993 FF36)          Discovered 1993-Mar-19 by UESAC at La Silla
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1993 FF36 = 1978 RS8 = 1978 RX11 = 1996 EH4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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