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30705 Idaios (3365 T-3)
Classification: Jupiter Trojan          SPK-ID: 2030705
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05966719201691152 5.4759e-08  
a 5.198858185473595 8.7534e-08 au
q 4.88865691585225 2.96e-07 au
i 19.75539748992827 5.7769e-06 deg
node 24.17797398705969 1.1731e-05 deg
peri 341.7509002056372 4.4359e-05 deg
M 210.3987174437115 4.6334e-05 deg
tp 2460799.756992947731
(2025-May-04.25699295)
0.00058709 TDB
period 4329.725697488385
11.85
0.00010935
2.994e-07
d
yr
n .08314614484904462 2.0999e-09 deg/d
Q 5.509059455094941 9.2757e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2009  
   data-arc span      23866 days (65.34 yr)  
   first obs. used      1955-02-13  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44384  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 19:52:36  

Additional Information
 Earth MOID = 3.89385 au 
 Jupiter MOID = .037557 au 
 T_jup = 2.879 
[ 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 10.4   n/a MPO395299  
diameter diameter 44.546 km 0.744 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 15.736 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D.; French, L.M.; Davitt, C.; Coley, D.R. (2014) Minor Planet Bull. 41, 95-100.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2015) Minor Planet Bull. 42, 216-224.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Stephens, R.D.; Coley, D.R. (2017) Minor Planet Bull. 44, 252-257.]
geometric albedo albedo 0.074   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

30705 Idaios           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Idaios was a herald of king Priam who tells Priam that Paris and Menelaos want to start a duel. Idaios is the younger son of the Hephaistos priest Dares. Idaios escaped Diomedes with the help of the god Hephaistos, because the god did not want his priest to lose both his sons.
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
 3365 T-3 = 1989 SD7 = 2001 QB72 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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