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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1983407895244461 4.7982e-08  
a 2.279288896852642 8.9268e-09 au
q 1.827212937496585 1.1053e-07 au
i 3.863698864282124 4.6193e-06 deg
node 274.0613945801827 9.4485e-05 deg
peri 120.4336190502591 9.5715e-05 deg
M 213.8582085456106 1.531e-05 deg
tp 2457910.734023878878
(2017-Jun-06.23402388)
5.449e-05 JED
period 1256.890631819877
3.44
7.3839e-06
2.022e-08
d
yr
n .2864211021119226 1.6826e-09 deg/d
Q 2.731364856208698 1.0697e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1205  
   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      .50405  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 15:58:11  

Additional Information
 Earth MOID = .836185 au 
 Jupiter MOID = 2.70908 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

[ show close-approach data ]
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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