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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .197889981658339 4.9257e-08  
a 2.280311028849856 9.9767e-09 AU
q 1.82906032117545 1.1428e-07 AU
i 3.863719426323325 5.2424e-06 deg
node 274.0914724692149 9.4694e-05 deg
peri 120.5009282181177 9.6478e-05 deg
M 99.21392759586132 1.6155e-05 deg
tp 2456653.875145589666
(2013-Dec-27.37514559)
5.6318e-05 JED
period 1257.736193007298
3.44
8.2542e-06
2.26e-08
d
yr
n .2862285445878961 1.8784e-09 deg/d
Q 2.731561736524263 1.1951e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1105  
   data-arc span      23123 days (63.31 yr)  
   first obs. used      1951-09-09  
   last obs. used      2014-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51318  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:19:54  

Additional Information
 Earth MOID = .839194 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 13.8 mag n/a MPO267737  

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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