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55576 Amycus (2002 GB10)
Classification: Centaur          SPK-ID: 2055576
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3925083816288454 2.2496e-06  
a 25.15462561477776 0.00010843 au
q 15.28122422424184 1.237e-05 au
i 13.31175649614081 1.8628e-05 deg
node 315.5729365316219 5.504e-05 deg
peri 239.7559013478777 0.00021023 deg
M 52.42617449166359 0.000418 deg
tp 2452685.752756382313
(2003-Feb-15.25275638)
0.011062 TDB
period 46081.35213234984
126.16
0.29796
0.0008158
d
yr
n .007812270763367516 5.0513e-08 deg/d
Q 35.02802700531368 0.00015099 au
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      12306 days (33.69 yr)  
   first obs. used      1987-11-24  
   last obs. used      2021-08-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .64232  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 23:30:19  

Additional Information
 Earth MOID = 14.3028 au 
 Jupiter MOID = 10.0189 au 
 T_jup = 4.143 
[ 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 7.12   n/a E2021B10  
diameter diameter 100.900 km 40.100 urn:nasa:pds:neowise_diameters_albedos::2.0[centaurs] (http://adsabs.harvard.edu/abs/2013ApJ...773...22B)  
rotation period rot_per 9.76 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:
[Thirouin, A.; Ortiz, J.L.; Duffard, R.; Santos-Sanz, P.; et al. (2010) Astron. Astrophys. 522, A93.]
geometric albedo albedo 0.180   0.135 urn:nasa:pds:neowise_diameters_albedos::2.0[centaurs] (http://adsabs.harvard.edu/abs/2013ApJ...773...22B)  

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 ]
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