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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 70 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4555722692599388 1.2523e-07  
a 10.68463129869588 2.2543e-06 AU
q 5.817009571743232 1.1887e-06 AU
i 4.343382131227702 7.5381e-06 deg
node 173.3383480104656 8.1698e-05 deg
peri 162.947152178971 8.561e-05 deg
M 356.1978597434124 8.5283e-06 deg
tp 2457135.229708448041
(2015-Apr-22.72970845)
0.00027193 JED
period 12756.68222845264
34.93
0.0040372
1.105e-05
d
yr
n .02822050385460352 8.9312e-09 deg/d
Q 15.55225302564853 3.2813e-06 AU
  Orbit Determination Parameters
   # obs. used (total)      1002  
   data-arc span      13120 days (35.92 yr)  
   first obs. used      1979-09-23  
   last obs. used      2015-08-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57773  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 16:14:01  

Additional Information
 Earth MOID = 4.80851 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. 2015-July); Warner et al., 2009 [Result based on less than full coverage, so that the period may be wrong by 30 percent or so.]

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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