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10664 Phemios (5187 T-2)
Classification: Jupiter Trojan          SPK-ID: 2010664
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03071893114678697 4.0859e-08  
a 5.19408044788187 8.3122e-08 au
q 5.034523848232515 2.6007e-07 au
i 8.573864176923587 5.1758e-06 deg
node 240.1323244178417 3.5252e-05 deg
peri 232.3541851578327 0.00011263 deg
M 298.9556185576889 0.0001089 deg
tp 2460129.669907514084
(2023-Jul-04.16990751)
0.0013128 TDB
period 4323.758558426923
11.84
0.00010379
2.842e-07
d
yr
n .08326089330274163 1.9987e-09 deg/d
Q 5.353637047531226 8.5676e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1507  
   data-arc span      24468 days (66.99 yr)  
   first obs. used      1954-03-07  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48624  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 16:24:32  

Additional Information
 Earth MOID = 4.05955 au 
 Jupiter MOID = .0370986 au 
 T_jup = 2.977 
[ 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 11.39   n/a E2021B10  
diameter diameter 30.963 km 0.603 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.067   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

10664 Phemios           Discovered 1973 Sept. 25 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Phemios was a singer with Telemachos, forced to play for Penelope's suitors, spared by Odysseus for friendly deeds and because a singer is sacred.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000124/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 5187 T-2 = 1989 ER2 = 1990 EM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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