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

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05810745247726332 3.9864e-08  
a 5.116465353834776 8.3696e-08 au
q 4.819160586435257 2.328e-07 au
i 7.127628971032678 5.0423e-06 deg
node 141.4783991769975 3.2844e-05 deg
peri 338.1559165419171 5.6732e-05 deg
M 242.5848738219521 4.8992e-05 deg
tp 2460579.216686075156
(2024-Sep-25.71668608)
0.00059429 TDB
period 4227.206690851835
11.57
0.00010372
2.84e-07
d
yr
n .08516262069207114 2.0896e-09 deg/d
Q 5.413770121234294 8.8559e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1738  
   data-arc span      17307 days (47.38 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48349  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:08:59  

Additional Information
 Earth MOID = 3.83619 au 
 Jupiter MOID = .351783 au 
 T_jup = 2.982 
[ 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 11.24   n/a E2021B10  
diameter diameter 24.996 km 2.961 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 40.43 h n/a LCDB (Rev. 2020-October); 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.]
geometric albedo albedo 0.103   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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