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3548 Eurybates (1973 SO)
Classification: Jupiter Trojan          SPK-ID: 2003548
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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08894579719585116 6.89e-08  
a 5.189626147609765 1.2574e-07 au
q 4.72803071276218 3.3558e-07 au
i 8.061574704500938 7.3551e-06 deg
node 43.56002796403208 4.6362e-05 deg
peri 28.09086385481137 6.368e-05 deg
M 186.9860076029846 4.4411e-05 deg
tp 2459675.801803952629
0.00055542 JED
period 4318.197846729963
n .08336811160068007 3.0298e-09 deg/d
Q 5.65122158245735 1.3692e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1081  
   data-arc span      22457 days (61.48 yr)  
   first obs. used      1954-02-09  
   last obs. used      2015-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52787  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:09:37  

Additional Information
 Earth MOID = 3.74335 au 
 Jupiter MOID = .0909367 au 
 T_jup = 2.972 
[ 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 MPO296162  
diameter diameter 72.14 km 4.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
rotation period rot_per 8.711 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2010) Minor Planet Bul. 37, 47-48.]
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
geometric albedo albedo 0.0538   0.007 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5

3548 Eurybates (1973 SO)          Discovered 1973-Sep-19 by Van Houten, C. J. at Palomar
and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1973 SO = 1954 CB = 1957 JX = 1978 EE5 = 1985 TZ 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2016-May-06 13:02 UT
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