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7399 Somme (1987 BC2)
Classification: Main-belt Asteroid          SPK-ID: 2007399
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1983433629056104 4.7891e-08  
a 2.279466708713695 8.8741e-09 au
q 1.827349616076037 1.1034e-07 au
i 3.863559474508994 4.5723e-06 deg
node 274.0615074951617 9.3953e-05 deg
peri 120.4044169939267 9.5148e-05 deg
M 271.1764680356299 1.5299e-05 deg
tp 2457910.651470903169
(2017-Jun-06.15147090)
5.409e-05 JED
period 1257.037713496116
3.44
7.3406e-06
2.01e-08
d
yr
n .2863875889600447 1.6724e-09 deg/d
Q 2.731583801351353 1.0634e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1211  
   data-arc span      23239 days (63.62 yr)  
   first obs. used      1951-09-09  
   last obs. used      2015-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50606  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:24:14  

Additional Information
 Earth MOID = .836287 au 
 Jupiter MOID = 2.70754 au 
 T_jup = 3.577 
[ 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 13.9 mag n/a MPO337317  

7399 Somme           Discovered 1987 Jan. 29 by E. W. Elst at the European Southern Observatory.
The Somme is a river in Northern France in the département of Picardie. The Celtic name means `tranquility'. With a length of nearly 250 km and a source near the city of St. Quentin, the Somme forms an extensive and beautiful bay, rich in flora and fauna, as it enters the English Channel.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-09-09Last Updated: 2014-11-10

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Alternate Designations
 1987 BC2 = 1965 UU = 1972 VH1 = 1989 SV 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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