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15094 Polymele (1999 WB2)
Classification: Jupiter Trojan          SPK-ID: 2015094
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09554834253766072 4.3315e-08  
a 5.172151529082877 1.1425e-07 au
q 4.677961023125381 3.1851e-07 au
i 12.98747417278282 2.2576e-06 deg
node 50.326690122737 1.2931e-05 deg
peri 4.280923886495382 2.1283e-05 deg
M 337.7838561290403 1.9527e-05 deg
tp 2459465.637688222657
(2021-Sep-08.13768822)
0.00023745 TDB
period 4296.405727049922
11.76
0.00014236
3.898e-07
d
yr
n .08379096921258178 2.7764e-09 deg/d
Q 5.666342035040373 1.2517e-07 au
  Orbit Determination Parameters
   # obs. used (total)      831  
   data-arc span      10382 days (28.42 yr)  
   first obs. used      1991-05-04  
   last obs. used      2019-10-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55508  
   source      ORB  
   producer      Ryan S. Park  
   solution date      2019-Oct-15 10:41:40  

Additional Information
 Earth MOID = 3.68875 au 
 Jupiter MOID = .234064 au 
 T_jup = 2.940 
[ 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 11.77   n/a E2021B10  
magnitude slope G 0.22   0.02 [Buie, M. W. et al. (2018) AJ 155, Issue 6, article id. 245]  
diameter diameter 21.075 km 0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 5.8607 h 0.0005 [Buie, M. W. et al. (2018) AJ 155, Issue 6, article id. 245]  
geometric albedo albedo 0.091   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

15094 Polymele           Discovered 1999 Nov. 17 by the Catalina Sky Survey.
Polymele is identified, according to Gaius Julius Hyginus (c. 64 B.C.E.--17 C.E.), as the wife of Menoetius and the mother of Patroclus.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2016-02-22Last Updated: 2016-02-25

Alternate Designations
 1999 WB2 = 1997 WR57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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