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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1932847431844207 5.9875e-08  
a 2.479979263158182 1.4605e-08 au
q 2.000637108175964 1.5218e-07 au
i 4.04445762771937 5.4123e-06 deg
node 20.19931437986217 7.8777e-05 deg
peri 97.50744674553887 8.0228e-05 deg
M 258.2041669191543 2.0387e-05 deg
tp 2459603.864804364699
(2022-Jan-24.36480436)
8.3201e-05 TDB
period 1426.495812023715
3.91
1.2601e-05
3.45e-08
d
yr
n .2523666715076308 2.2294e-09 deg/d
Q 2.9593214181404 1.7428e-08 au
  Orbit Determination Parameters
   # obs. used (total)      323  
   data-arc span      7890 days (21.60 yr)  
   first obs. used      1999-03-10  
   last obs. used      2020-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58572  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:12:04  

Additional Information
 Earth MOID = 1.02145 au 
 Jupiter MOID = 2.14241 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 16.39   n/a E2021B55  

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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