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Triangulation Measurements in the Solar System

Published online by Cambridge University Press:  12 April 2016

V.K. Abalakin ,
M.S. Chubey ,
G.I. Eroshkin  and
I.M. Kopylov
V.K. Abalakin
Affiliation:
Pulkovo Astronomical Observatory 65/1 Pulkovskoye shosse, Saint-Petersburg, 196140, RussiaE-mail:vicabal@gao.spb.ru; mchubey@gao.spb.ru
M.S. Chubey
Affiliation:
Pulkovo Astronomical Observatory 65/1 Pulkovskoye shosse, Saint-Petersburg, 196140, RussiaE-mail:vicabal@gao.spb.ru; mchubey@gao.spb.ru
G.I. Eroshkin
Affiliation:
Pulkovo Astronomical Observatory 65/1 Pulkovskoye shosse, Saint-Petersburg, 196140, RussiaE-mail:vicabal@gao.spb.ru; mchubey@gao.spb.ru
I.M. Kopylov
Affiliation:
Pulkovo Astronomical Observatory 65/1 Pulkovskoye shosse, Saint-Petersburg, 196140, RussiaE-mail:vicabal@gao.spb.ru; mchubey@gao.spb.ru

Abstract

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The operational work of the Interplanetary Solar Stereoscopic Observatory (ISSO) may continue for 11 years. The ISSO Project is designed to insert two spacecraft (SC) into Lagrangian triangular libration points of the “Sun + barycenter (the Earth + the Moon)” system. The Project scientific program consists of two sets of experiments related to solar physics and to dynamical astronomy, respectively.

Various options of the astronomical observation program are possible. We discuss the option where the stereoscopic mode is applied to the direct triangulation observations of the solar system objects with respect to the ICRS coordinate frame.

The stereoscopic mode with the baseline equal to appears to be suitable for receiving the three-dimensional (3-D) measurement series for planets during the ISSO’s lifetime. Extended investigation of the planetary aberration based on the observations of major and minor planets, the direct distance determinations for minor planets and Kuiper’s belt objects, and the new set of star parallaxes may be used for constructing a new fundamental ephemeris and establishing an alternative scale of stellar distances. The accuracy of the angular measurements is expected to attain the milliarcsecond level.

Type
Section 1. Celestial Reference System and Frame
Information
International Astronomical Union Colloquium , Volume 180: Towards Models and Constants for Sub-Microarcsecond Astrometry , March 2000 , pp. 132 - 149
Copyright
Copyright © US Naval Observatory 2000

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