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 ]  
11509 Thersilochos (1990 VL6)
Classification: Jupiter Trojan          SPK-ID: 2011509
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1431248789848467 4.603e-08  
a 5.177871291564998 9.2068e-08 au
q 4.436789089560645 2.5787e-07 au
i 18.50614177973878 5.8195e-06 deg
node 214.6976961281138 1.4024e-05 deg
peri 128.2854943105293 2.759e-05 deg
M 249.8122597857297 2.8747e-05 deg
tp 2460317.713213751090
(2024-Jan-08.21321375)
0.00036884 TDB
period 4303.534640317267
11.78
0.00011478
3.143e-07
d
yr
n .08365216736665095 2.2311e-09 deg/d
Q 5.91895349356935 1.0525e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1667  
   data-arc span      11169 days (30.58 yr)  
   first obs. used      1989-09-29  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .478  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:33:28  

Additional Information
 Earth MOID = 3.46803 au 
 Jupiter MOID = .0804479 au 
 T_jup = 2.877 
[ 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 10.1   n/a MPO435808  
diameter diameter 49.960 km 0.755 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 17.367 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2015) Minor Planet Bull. 42, 216-224.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.065   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

11509 Thersilochos           Discovered 1990 Nov. 15 by E. W. Elst at the European Southern Observatory.
Thersilochos was a Trojan warrior from the rich valleys of Paeonia. He showed up, together with Hector, at the battle for the dead body of Patrocles. He was later killed by Achilles.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030106/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1990 VL6 = 1989 SN7 = 1989 VM5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jun-02 21:59 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin