TITLE:
Stellar Distance and Velocity
AUTHORS:
Miloš Čojanović
KEYWORDS:
Stellar Distance, Stellar Velocity
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.7 No.1,
January
25,
2019
ABSTRACT: In this paper, a method is presented by which it is possible to determine a distance
between the sun and a star as well as a velocity at which the star moves
relative to the sun. In order to achieve this, it is sufficient to know three positions of the star and the unit vectors
determined by the star and three arbitrarily chosen points that do not lie on a
single line. The method has been tested using the data generated by a computer
program as well as real data obtained by Gaia mission. In the first case, we
found the huge differences comparing the results derived by the method to the
results calculated by the traditional parallax method. In the second case also,
there are large differences between the obtained and the expected results, but
primarily because of the form of the input data, that is not fully suited to
the proposed method. Under certain conditions, one would be able to find a
velocity at which the sun is moving regarding a stationary coordinate system (K) that will be defined later on.