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JPL Small-Body Database Browser
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26057 Ankaios (4742 T-2)
Classification: Jupiter Trojan          SPK-ID: 2026057
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1090323159764909 5.3666e-08  
a 5.200936478827895 1.2693e-07 au
q 4.633866329294674 3.3528e-07 au
i 7.286992285856778 6.2384e-06 deg
node 164.2786444182711 4.306e-05 deg
peri 268.8177068403764 5.3777e-05 deg
M 239.2235792073694 3.626e-05 deg
tp 2460053.951035474270
(2023-Apr-19.45103547)
0.0004708 TDB
period 4332.322230918964
11.86
0.0001586
4.342e-07
d
yr
n .08309631204963197 3.042e-09 deg/d
Q 5.768006628361117 1.4077e-07 au
  Orbit Determination Parameters
   # obs. used (total)      615  
   data-arc span      16763 days (45.89 yr)  
   first obs. used      1973-09-29  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5984  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:41:36  

Additional Information
 Earth MOID = 3.6586 au 
 Jupiter MOID = .0516948 au 
 T_jup = 2.972 
[ 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 12.2   n/a MPO412370  

26057 Ankaios           Discovered 1973 Sept. 30 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Ankaios was the father of hero Agapenor from Arkadie.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030318/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 4742 T-2 = 1998 UQ28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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