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The Future of Astrometry in Space [PDF]

open access: yesFrontiers in Astronomy and Space Sciences, 2018
This contribution focuses on the importance of astrometry and on its future developments. Over the centuries astrometry has greatly contributed to the advance of the knowledge of the Universe.
Antonella Vallenari
exaly   +7 more sources

Stingray Sensor System for Persistent Survey of the GEO Belt [PDF]

open access: yesSensors
The Stingray sensor system is a 15-camera optical array dedicated to the nightly astrometric and photometric survey of the geosynchronous Earth orbit (GEO) belt visible above Tucson, Arizona.
Tanner Campbell   +6 more
doaj   +2 more sources

Checking the possibility of determining the relative orbits of stars rotating around the center body of the Galaxy

open access: yesOpen Astronomy, 2022
The results of observations of selected stars orbiting the central body of our Galaxy, which, according to the latest data, has a mass of about 4 million of solar mass, are considered.
Shakht Natalia A.   +2 more
doaj   +1 more source

The Science of Fundamental Catalogs

open access: yesFrontiers in Astronomy and Space Sciences, 2021
This review paper discusses the science of astrometric catalogs, their current applications and future prospects for making progress in fundamental astronomy, astrophysics and gravitational physics.
Sergei M. Kopeikin, Valeri V. Makarov
doaj   +1 more source

SQUAB—I: The First Release of Strange QUasar Candidates With ABnormal Astrometric Characteristics From Gaia EDR3 and SDSS

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Given their extremely large distances and small apparent sizes, quasars are generally considered as objects with near-zero parallax and proper motion.
Qi-Qi Wu   +15 more
doaj   +1 more source

Precise Distance Measurement for a Near-Earth Asteroid by the Refined Rotational Reflex Velocity Method

open access: yesThe Astronomical Journal, 2023
The rotational reflex velocity (RRV) method was proposed by Heinze and Metchev in 2015 and was used to measure the distances of main-belt asteroids (MBAs). Later, Lin et al. generalized this method using spherical astronomy in 2016.
B. F. Guo   +3 more
doaj   +1 more source

Applications of the Source-Frequency Phase-Referencing Technique for ngEHT Observations

open access: yesGalaxies, 2022
The source-frequency phase-referencing (SFPR) technique has been demonstrated to have great advantages for mm-VLBI observations. By implementing simultaneous multi-frequency receiving systems on the next-generation Event Horizon Telescope (ngEHT ...
Wu Jiang   +8 more
doaj   +1 more source

Astrometry test of MSCRED IRAF software package [PDF]

open access: yesSerbian Astronomical Journal, 2005
Astrometric properties of images obtained using MSCRED IRAF software package are investigated. CCD observations of M35 open cluster were taken in an observation run between October 10 and 17, 2004 at Belogradchick Observatory (Bulgaria) using the 60cm ...
Popescu R.   +3 more
doaj   +1 more source

Orientations of orbital planes of binaries [PDF]

open access: yesSerbian Astronomical Journal, 2004
Orientations of orbital planes of binaries are analyzed by using a complete sample of known orbital systems. The use of a so large sample is possible due to the application of a new procedure enabling to include the binaries for which the ascending nodes
Popović Georgije M.   +2 more
doaj   +1 more source

Digitization of the Belgrade Astronomical Observatory's vertical circle observational heritage [PDF]

open access: yesSerbian Astronomical Journal, 2018
The aim of the paper is to present the digitization of the results of last observations of bright stars made by the Belgrade vertical circle ASKANIA N±80118 (D = 190 mm, f = 2578 mm) at the Astronomical Observatory of Belgrade.
Šegan S., Šegan-Radonjić M.
doaj   +1 more source

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