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JPL Small-Body Database Browser
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6997 Laomedon (3104 T-3)
Classification: Jupiter Trojan          SPK-ID: 2006997
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .101980666194044 5.4639e-08  
a 5.175085767576264 8.0437e-08 au
q 4.647327073387521 3.1903e-07 au
i 19.12012341202421 6.2771e-06 deg
node 195.305711221895 1.407e-05 deg
peri 58.14349940225367 3.3425e-05 deg
M 338.2246731666264 3.3344e-05 deg
tp 2459260.597954066483
(2021-Feb-15.09795407)
0.00039981 TDB
period 4300.06236785503
11.77
0.00010025
2.745e-07
d
yr
n .08371971594904477 1.9519e-09 deg/d
Q 5.702844461765007 8.864e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1473  
   data-arc span      24201 days (66.26 yr)  
   first obs. used      1953-10-31  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48664  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:17:42  

Additional Information
 Earth MOID = 3.67993 au 
 Jupiter MOID = .472289 au 
 T_jup = 2.880 
[ 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 10.6   n/a MPO473863  
diameter diameter 37.549 km 0.216 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.087   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

6997 Laomedon           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Named for Laomedon, king of Troy and father of Priam and Tithonus.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19960828/MPCPages.arcLast Updated: 2003-09-26

Alternate Designations
 3104 T-3 = 1989 SS4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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