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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1520990498415376 6.9875e-08  
a 5.265778800421733 1.3455e-07 au
q 4.464858848201875 3.3865e-07 au
i 14.68415743901386 6.6974e-06 deg
node 138.3629247993919 2.9944e-05 deg
peri 182.8703268805188 3.9312e-05 deg
M 154.3435755255245 2.7403e-05 deg
tp 2455508.250493601228
(2010-Nov-07.75049360)
0.0003223 JED
period 4413.593633451255
12.08
0.00016916
4.631e-07
d
yr
n .08156618617344122 3.1263e-09 deg/d
Q 6.06669875264159 1.5502e-07 au
  Orbit Determination Parameters
   # obs. used (total)      964  
   data-arc span      8358 days (22.88 yr)  
   first obs. used      1993-01-27  
   last obs. used      2015-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51797  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:18:05  

Additional Information
 Earth MOID = 3.45026 au 
 Jupiter MOID = .573968 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. 2015-December); 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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