Datatype: ORB

This datatype orb refers to the orbital elements for spectroscopic binaries.

The information is given on two lines, where the first one gives the orbital elements, and the second the uncertainties on these elements.

Record structure

No:Star number
Ref:Data source
Po:Orbital period
To:Epoch of periastron
Omega:Orientation of node line
Vo:Systemic velocity
K1:Semi-amplitude of the primary star
K2:Semi-amplitude of the secondary star

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Last Update: 17 February 1998