... In result, we obtained the GA constant. ... So, we use the results of the observations of Galactic ob jects to improve A. Our previous estimate of the GA constant (Malkin 2011) yields the values of R0 = 8.2 kpc, 0 = 29.5 km s-1 kpc-1 , and A = 5.02 µas/yr. ... So, the results published in 2008­2013 were used to derive the final estimate of the GA constant. ... We have applied several statistical techniques mostly used in physics and metrology to these data, as described in Malkin (2012, 2013). ...

... LOCATION . ... The administrative centre, the library, scientific laboratories, computer center, hotel and apartment houses of an observatory are located in the settlement Nizhnij Arkhiz , which is situated in 25 kms to the south from a village Zelenchukskaya. ... It is desirable to come on conference by the following types of transport: . ... During the conference period it is supposed to conduct a public meeting of the section "Sun" with discussion of results of the researches made in 2005. ...