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JPL Small-Body Database Browser
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11552 Boucolion (1993 BD4)
Classification: Jupiter Trojan          SPK-ID: 2011552
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1518770606894889 4.8316e-08  
a 5.269980671647916 9.852e-08 au
q 4.469591497347612 2.7757e-07 au
i 14.6787394208614 5.2684e-06 deg
node 138.3617255110632 1.8019e-05 deg
peri 182.2304049046855 2.7361e-05 deg
M 253.0355024615299 2.5709e-05 deg
tp 2459913.452804246108
(2022-Nov-29.95280425)
0.00033596 TDB
period 4418.87748183554
12.10
0.00012391
3.392e-07
d
yr
n .08146865385606052 2.2845e-09 deg/d
Q 6.070369845948221 1.1348e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1824  
   data-arc span      9698 days (26.55 yr)  
   first obs. used      1993-01-27  
   last obs. used      2019-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49275  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:09:57  

Additional Information
 Earth MOID = 3.45597 au 
 Jupiter MOID = .563396 au 
 T_jup = 2.912 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.1   n/a MPO358742  
diameter diameter 51.136 km 0.521 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 32.44 h n/a LCDB (Rev. 2019-January); 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 Bull. 42, 216-224.]
geometric albedo albedo 0.062   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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