Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
JPL Small-Body Database Browser
Search: [ help ]  
55576 Amycus (2002 GB10)
Classification: Centaur          SPK-ID: 2055576
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3956362177632942 2.9095e-05  
a 25.13064808142283 0.0013622 au
q 15.18805352454832 9.4821e-05 au
i 13.34907182979978 6.4959e-05 deg
node 315.466728664442 0.00039398 deg
peri 239.29718056417 0.00123 deg
M 38.48031585659841 0.0027293 deg
tp 2452681.916063618251
0.060439 JED
period 46015.48032235813
n .007823454139303685 6.3612e-07 deg/d
Q 35.07324263829734 0.0019012 au
  Orbit Determination Parameters
   # obs. used (total)      72  
   data-arc span      7204 days (19.72 yr)  
   first obs. used      1987-11-24  
   last obs. used      2007-08-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      2  
   fit RMS      .65794  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 09:08:34  

Additional Information
 Earth MOID = 14.2084 au 
 Jupiter MOID = 9.93366 au 
 T_jup = 4.135 
[ 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 7.8 mag n/a MPO130071  
rotation period rot_per 9.76 h n/a LCDB (Rev. 2016-February); 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:
[Thirouin, A.; Ortiz, J.L.; Duffard, R.; Santos-Sanz, P.; et al. (2010) Astron. Astrophys. 522, A93.]

55576 Amycus           Discovered 2002 Apr. 8 by the NEAT at Palomar.
Amycus was the first centaur to engage in battle with the Lapiths after Eurytus was killed for raping Peirithous' bride Hippodamia. He began the battle by smashing the face of the Celadon with a candelabrum stripped from the inmost wedding shrine. Pelates of Pella killed Amycus by stabbing him with a table leg from a maple tree.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051215/MPCPages.arcLast Updated: 2006-03-22
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2016-May-02 10:41 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin