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9430 Erichthonios (1996 HU10)
Classification: Jupiter Trojan          SPK-ID: 2009430
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05460764494011983 3.8734e-08  
a 5.264293533921578 7.901e-08 au
q 4.97682286176062 2.4727e-07 au
i 1.003050904323501 4.2743e-06 deg
node 326.432523403185 0.00027579 deg
peri 310.6757835148253 0.00028016 deg
M 303.8842754717898 4.9761e-05 deg
tp 2459688.186734137612
(2022-Apr-18.68673414)
0.0006096 TDB
period 4411.726416631844
12.08
9.9321e-05
2.719e-07
d
yr
n .08160070820412386 1.8371e-09 deg/d
Q 5.551764206082535 8.3325e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1612  
   data-arc span      15207 days (41.63 yr)  
   first obs. used      1978-11-29  
   last obs. used      2020-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48887  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:13:41  

Additional Information
 Earth MOID = 3.96051 au 
 Jupiter MOID = .0572169 au 
 T_jup = 2.997 
[ 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 11.3   n/a MPO279615  
diameter diameter 27.532 km 0.287 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 26.264 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.077   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

9430 Erichthonios           Discovered 1996 Apr. 17 by E. W. Elst at the European Southern Observatory.
Erichthonios was the son of Dardanos and the father of Tros.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030106/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1996 HU10 = 1978 WL9 = 1998 MC43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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