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118361 (1999 FX4)
Classification: Main-belt Asteroid          SPK-ID: 2118361
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1928264804766608 6.3213e-08  
a 2.481269742748764 1.5623e-08 au
q 2.002815231141291 1.5905e-07 au
i 4.043076611367189 6.5178e-06 deg
node 20.22182403193634 9.5777e-05 deg
peri 97.37292793322349 9.737e-05 deg
M 207.8581989555738 2.097e-05 deg
tp 2459603.830733494959
(2022-Jan-24.33073349)
8.6092e-05 TDB
period 1427.609391811801
3.91
1.3483e-05
3.691e-08
d
yr
n .2521698176439695 2.3817e-09 deg/d
Q 2.959724254356238 1.8636e-08 au
  Orbit Determination Parameters
   # obs. used (total)      283  
   data-arc span      7812 days (21.39 yr)  
   first obs. used      1999-03-10  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59068  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:03:04  

Additional Information
 Earth MOID = 1.02373 au 
 Jupiter MOID = 2.14273 au 
 T_jup = 3.449 
[ 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 16.4   n/a MPO280573  

118361 (1999 FX4)          Discovered 1999-Mar-17 by Spacewatch at Kitt Peak
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

Alternate Designations
 1999 FX4 = 2001 WN16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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