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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1100088159325966 5.3824e-08  
a 5.19682507165289 1.2622e-07 au
q 4.625128498911525 3.3617e-07 au
i 7.291479284021326 6.242e-06 deg
node 164.2607317965137 4.303e-05 deg
peri 269.14026281614 5.3564e-05 deg
M 272.2605344329706 3.6696e-05 deg
tp 2460055.124991232924
(2023-Apr-20.62499123)
0.00046671 TDB
period 4327.186111634153
11.85
0.00015765
4.316e-07
d
yr
n .08319494255911418 3.031e-09 deg/d
Q 5.768521644394257 1.4011e-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 = 3.65012 au 
 Jupiter MOID = .0502992 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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