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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05767833832520217 4.8864e-08  
a 5.117510945261401 8.9548e-08 au
q 4.822341417577689 2.5963e-07 au
i 7.127130852514583 5.2529e-06 deg
node 141.4761849544873 3.8781e-05 deg
peri 338.2097996285465 6.0968e-05 deg
M 225.4598581390054 4.9274e-05 deg
tp 2460580.787037168166
0.00059958 TDB
period 4228.502553299852
n .08513652184484601 2.2346e-09 deg/d
Q 5.412680472945113 9.4713e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1402  
   data-arc span      16843 days (46.11 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50134  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:21:07  

Additional Information
 Earth MOID = 3.83944 au 
 Jupiter MOID = .350585 au 
 T_jup = 2.982 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.2   n/a MPO302187  
diameter diameter 24.996 km 2.961 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (  
rotation period rot_per 40.43 h n/a LCDB (Rev. 2019-August); 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] (  

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 ]
FirstGov 2020-Apr-01 12:46 UT
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