Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09520975383184067 4.3317e-08  
a 5.170434470868143 1.1435e-07 au
q 4.678158677693124 3.1857e-07 au
i 12.98885531210454 2.2579e-06 deg
node 50.32266130756343 1.293e-05 deg
peri 4.299956207867912 2.1329e-05 deg
M 320.9876838617615 1.9324e-05 deg
tp 2459465.859108157920
(2021-Sep-08.35910816)		 0.0002381 TDB
period 4294.266414309217
11.76		 0.00014246
3.9e-07		 d
yr
n .08383271210198313 2.7811e-09 deg/d
Q 5.662710264043162 1.2524e-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 = 3.68973 au 
 Jupiter MOID = .23162 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 11.8   n/a MPO492919  
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-27 17:13 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin