Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
7399 Somme (1987 BC2)
Classification: Main-belt Asteroid          SPK-ID: 2007399
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1978899682632937 4.8056e-08  
a 2.280311033885497 9.1344e-09 AU
q 1.829060355759457 1.1083e-07 AU
i 3.863718300697661 4.7384e-06 deg
node 274.0914700855325 9.4584e-05 deg
peri 120.5009185306732 9.5871e-05 deg
M 99.21393441573004 1.5264e-05 deg
tp 2456653.875120614827
(2013-Dec-27.37512061)
5.287e-05 JED
period 1257.73619717351
3.44
7.5573e-06
2.069e-08
d
yr
n .2862285436397728 1.7199e-09 deg/d
Q 2.731561712011537 1.0942e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1188  
   data-arc span      23212 days (63.55 yr)  
   first obs. used      1951-09-09  
   last obs. used      2015-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50447  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:28:22  

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

[ 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Apr-18 20:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin