Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05461786023471352 3.8366e-08  
a 5.262197584957386 7.4875e-08 au
q 4.974787612734737 2.4217e-07 au
i 1.003048802790472 3.7763e-06 deg
node 326.4285369756243 0.00026816 deg
peri 311.3056733249245 0.00027182 deg
M 335.6316186216402 4.3758e-05 deg
tp 2459694.951204178426
(2022-Apr-25.45120418)
0.00053477 TDB
period 4409.091922684988
12.07
9.4104e-05
2.576e-07
d
yr
n .08164946576590586 1.7427e-09 deg/d
Q 5.549607557180036 7.8964e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1779  
   data-arc span      15594 days (42.69 yr)  
   first obs. used      1978-11-29  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47996  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 19:57:31  

Additional Information
 Earth MOID = 3.95827 au 
 Jupiter MOID = .0587084 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 11.37   n/a MPO636208  
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. 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:
[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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-23 10:28 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin