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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1016896368846899 5.5559e-08  
a 5.175191490668922 8.7606e-08 au
q 4.648928147174063 3.2831e-07 au
i 19.11923278900115 6.3199e-06 deg
node 195.3056033557658 1.47e-05 deg
peri 57.91437025669137 3.676e-05 deg
M 304.9121763584099 3.7897e-05 deg
tp 2459258.523156548595
(2021-Feb-13.02315655)
0.00045894 TDB
period 4300.194139066492
11.77
0.00010919
2.989e-07
d
yr
n .0837171505187323 2.1257e-09 deg/d
Q 5.701454834163783 9.6514e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1369  
   data-arc span      23933 days (65.52 yr)  
   first obs. used      1953-10-31  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48758  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:24:17  

Additional Information
 Earth MOID = 3.68115 au 
 Jupiter MOID = .472662 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 10.5   n/a MPO435766  
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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