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6998 Tithonus (3108 T-3)
Classification: Jupiter Trojan          SPK-ID: 2006998
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 .07115705267839893 3.8804e-08  
a 5.179771281517736 7.0143e-08 au
q 4.811194023576721 2.3404e-07 au
i 1.729816317599106 5.3286e-06 deg
node 35.24457896799289 0.0001352 deg
peri 258.7907662257964 0.00014132 deg
M 292.0799333309749 4.2784e-05 deg
tp 2459812.881275364670
(2022-Aug-21.38127536)
0.00051354 TDB
period 4305.903593358164
11.79
8.7463e-05
2.395e-07
d
yr
n .08360614495765727 1.6982e-09 deg/d
Q 5.548348539458751 7.5134e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1568  
   data-arc span      15625 days (42.78 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49351  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:31:25  

Additional Information
 Earth MOID = 3.79567 au 
 Jupiter MOID = .00546872 au 
 T_jup = 2.994 
[ 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 11.5   n/a MPO400069  
diameter diameter 27.828 km 0.426 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.049   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

6998 Tithonus           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Named for Tithonus, son of Laomedon and brother of Priam, kings of Troy.
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
 3108 T-3 = 1989 UM5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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