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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1425799671792084 5.2757e-08  
a 5.178944363025218 1.0005e-07 au
q 4.440530645722136 2.7848e-07 au
i 18.50303760584788 5.854e-06 deg
node 214.6994283222415 1.6213e-05 deg
peri 128.3339207562657 2.8942e-05 deg
M 216.2465205191284 2.9077e-05 deg
tp 2460319.501120012423
(2024-Jan-10.00112001)
0.0003839 TDB
period 4304.87251814185
11.79
0.00012474
3.415e-07
d
yr
n .08362616976062974 2.4232e-09 deg/d
Q 5.9173580803283 1.1431e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1474  
   data-arc span      10816 days (29.61 yr)  
   first obs. used      1989-09-29  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49123  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:55:41  

Additional Information
 Earth MOID = 3.47083 au 
 Jupiter MOID = .0834806 au 
 T_jup = 2.878 
[ 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-January); 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 ]
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