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19913 Aigyptios (1973 SU1)
Classification: Jupiter Trojan          SPK-ID: 2019913
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05695041836611206 6.1266e-08  
a 5.123168318428663 1.1399e-07 au
q 4.831401739334139 3.2236e-07 au
i 7.122228971426307 7.2077e-06 deg
node 141.5096605208587 5.2731e-05 deg
peri 339.7161893916963 9.3376e-05 deg
M 104.6309432372779 7.2614e-05 deg
tp 2456369.483133305479
(2013-Mar-17.98313331)
0.00086072 JED
period 4235.516361589453
11.60
0.00014136
3.87e-07
d
yr
n .08499553992158436 2.8367e-09 deg/d
Q 5.414934897523186 1.2048e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1063  
   data-arc span      15550 days (42.57 yr)  
   first obs. used      1973-09-19  
   last obs. used      2016-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4836  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:33:37  

Additional Information
 Earth MOID = 3.84676 au 
 Jupiter MOID = .351479 au 
 T_jup = 2.982 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.2 mag n/a MPO302187  
rotation period rot_per 40.43 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[French, L.M.; Stephens, R.D.; Coley, D.; Wasserman, L.; Sieben, J. (2015) Icarus 254, 1-17.]

19913 Aigyptios           Discovered 1973 Sept. 19 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Aigyptios was the father of Antiphos, who was a hero in Troy and companion of Odysseus.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1973 SU1 = 1999 WR8 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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