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5130 Ilioneus (1989 SC7)
Classification: Jupiter Trojan          SPK-ID: 2005130
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01027917006913745 8.6006e-08  
a 5.218807848845192 1.2277e-07 AU
q 5.165162835408763 4.8734e-07 AU
i 15.72928603311429 8.2497e-06 deg
node 242.513720056867 3.0713e-05 deg
peri 114.0484138160507 0.00047996 deg
M 45.99797827172218 0.00047265 deg
tp 2456444.094223427403
0.0057208 JED
period 4354.671381052314
n .08266984314049557 2.917e-09 deg/d
Q 5.272452862281621 1.2403e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      957  
   data-arc span      21595 days (59.12 yr)  
   first obs. used      1955-12-11  
   last obs. used      2015-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49627  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:57:14  

Additional Information
 Earth MOID = 4.19262 AU 
 T_jup = 2.925 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.7 mag n/a MPO272661  
diameter diameter 59.40 km 5.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
rotation period rot_per 14.768 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Published Reference List:
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
geometric albedo albedo 0.0602   0.013 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

5130 Ilioneus (1989 SC7)          Discovered 1989-Sep-30 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1989 SC7 = 1990 VE8 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2015-Mar-29 23:47 UT
(server date/time)  
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