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11552 Boucolion (1993 BD4)
Classification: Jupiter Trojan          SPK-ID: 2011552
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1516980988414818 6.929e-08  
a 5.26713248713744 1.2863e-07 au
q 4.468118502492485 3.3934e-07 au
i 14.68244437729707 6.6831e-06 deg
node 138.364070209259 2.5728e-05 deg
peri 182.759408812769 3.4356e-05 deg
M 170.812958150764 2.6544e-05 deg
tp 2455505.528574197683
(2010-Nov-05.02857420)
0.00030099 JED
period 4415.295662892077
12.09
0.00016174
4.428e-07
d
yr
n .08153474364708686 2.9867e-09 deg/d
Q 6.066146471782395 1.4814e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1072  
   data-arc span      8458 days (23.16 yr)  
   first obs. used      1993-01-27  
   last obs. used      2016-03-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52745  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:12:06  

Additional Information
 Earth MOID = 3.4549 au 
 Jupiter MOID = .569916 au 
 T_jup = 2.912 
[ 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 10.1 mag n/a MPO358742  
rotation period rot_per 32.44 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:
[Stephens, R.D.; Coley, D.R.; French, L.M. (2015) Minor Planet Bul. 42, 216-224.]

11552 Boucolion           Discovered 1993 Jan. 27 by E. W. Elst at Caussols.
Boucolion was the father of Pedasos and Aesopos. Both sons died near the Scamander river.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030106/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1993 BD4 = 1975 NP1 = 1994 CE20 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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