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185666 (1995 FT9)
Classification: Jupiter Trojan          SPK-ID: 2185666
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09744042183112113 6.5697e-08  
a 5.279443411708285 1.5099e-07 au
q 4.765012218637897 4.2803e-07 au
i 14.23103113211127 7.2752e-06 deg
node 169.1790789191048 2.6537e-05 deg
peri 87.23305707166649 4.9521e-05 deg
M 341.2685573521293 4.7185e-05 deg
tp 2459231.041631273205
(2021-Jan-16.54163127)
0.00058522 TDB
period 4430.784580694758
12.13
0.00019008
5.204e-07
d
yr
n .08124971851905088 3.4857e-09 deg/d
Q 5.793874604778673 1.6571e-07 au
  Orbit Determination Parameters
   # obs. used (total)      238  
   data-arc span      8809 days (24.12 yr)  
   first obs. used      1995-03-26  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54874  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:52:55  

Additional Information
 Earth MOID = 3.78939 au 
 Jupiter MOID = .260443 au 
 T_jup = 2.929 
[ 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 12.9   n/a MPO436917  
diameter diameter 13.909 km 0.991 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.048   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

185666 (1995 FT9)          Discovered 1995-Mar-26 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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