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60558 Echeclus (2000 EC98)
Classification: Centaur          SPK-ID: 2060558
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 76 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4554082672881632 1.1029e-07  
a 10.68001944700776 2.2274e-06 au
q 5.816250296042068 8.5477e-07 au
i 4.344668788163465 7.2368e-06 deg
node 173.3358764170433 6.1481e-05 deg
peri 162.8552842537496 6.5525e-05 deg
M 13.16942474662282 5.667e-06 deg
tp 2457134.140534041778
(2015-Apr-21.64053404)
0.00026627 JED
period 12748.42379034161
34.90
0.0039881
1.092e-05
d
yr
n .02823878511732103 8.8339e-09 deg/d
Q 15.54378859797345 3.2417e-06 au
  Orbit Determination Parameters
   # obs. used (total)      1391  
   data-arc span      13264 days (36.31 yr)  
   first obs. used      1979-09-23  
   last obs. used      2016-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61017  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 18:10:20  

Additional Information
 Earth MOID = 4.80643 au 
 Jupiter MOID = .838887 au 
 T_jup = 3.031 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.6 mag n/a MPO309608  
rotation period rot_per 26.802 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:
[Rousselot, P.; Petit, J.-M.; Poulet, F.; Sergeev, A. (2005) Icarus 176, 478-491.]

60558 Echeclus           Discovered 2000 Mar. 3 by Spacewatch at Kitt Peak.
The centaur Echeclus was killed by Ampyx in the battle with the Lapiths.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060219/MPCPages.arcLast Updated: 2010-06-03

[ show close-approach data ]
Alternate Designations
 2000 EC98 = 174P = 2002 GJ27 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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