scholarly journals Observations of comets and minor planets at Kiev comets station (585)

2009 ◽  
Vol 5 (S263) ◽  
pp. 298-302
Author(s):  
Alexander R. Baransky ◽  
Klim I. Churuymov ◽  
Vasyl A. Ponomarenko
Keyword(s):  
Astronomical Observatory ◽  
Minor Planets ◽  
Photometric Observations ◽  
National University

AbstractWe present the results of astrometric and photometric observations of comets and minor planets obtained at the Kiev comet station (Code MPC 585) of the Astronomical Observatory of Kyiv Shevchenko National University in 2006-2009. The 2318 position observations of 176 comets, 302 observations of 57 numbered minor planets, and 220 observations of 30 unnumbered minor planets were obtained. The accuracy of the astrometric observations of the comets is analyzed.

scholarly journals The astronomical observatory “Khurel Togoot” of Mongolia

2006 ◽  
Vol 2 (SPS5) ◽  
pp. 167-172
Author(s):  
Damdin Batmunkh
Keyword(s):  
Ccd Camera ◽  
Scientific Work ◽  
Modern Technology ◽  
Astronomical Observatory ◽  
Capital City ◽  
Minor Planets ◽  
Solar Telescope ◽  
International Geophysical Year ◽  
Young Professional ◽  
International Geophysical

AbstractIn this paper the basic researches, telescopes and devices of the Khurel Togoot astronomical observatory, which was founded during the International Geophysical Year, are briefly described. Our astronomical observatory is located on Bogd Mountain near the capital city Ulaanbaatar. Almost 50 years of scientific work has been carried out there. In particular, astrometric researches, GPS, solar researches and observations of minor planets are conducted. Now these scientific researches basically are maintained and extended, with the introduction of modern technology. As an example of the data received by our solar telescope ‘Coronagraph’, some solar images will be shown. Recently we equipped this telescope with a CCD camera. Because of the transformation of the economy in Mongolia, there are at present difficulties with the preparation of young professional astronomers and with the purchase of new astronomical equipment.

scholarly journals Kharkiv study of near-Earth asteroids

2006 ◽  
Vol 2 (S236) ◽  
pp. 385-390 ◽  
Author(s):  
Yu. N. Krugly ◽  
N. M. Gaftonyuk ◽  
I. N. Belskaya ◽  
V. G. Chiorny ◽  
V. G. Shevchenko ◽  
...  
Keyword(s):  
Surface Properties ◽  
Crimean Astrophysical Observatory ◽  
Photometric System ◽  
Rotation Periods ◽  
Photometric Observations ◽  
National University ◽  
Ccd Observations ◽  
Asteroid Hazard ◽  
Near Earth Asteroids

AbstractThe regular CCD observations of near-Earth asteroids (NEAs) in the Institute of Astronomy of Kharkiv National University were initiated in 1995 within the framework of asteroid hazard problem in collaboration with the DLR, Institute of Planetary Research (Berlin). The main aim of the study is a determination of rotation periods and shapes of NEAs as well as astrometry of newly discovered objects. We also carry out the absolute photometry of NEAs in BVRI bands in order to put constraints on surface properties and to estimate their diameters. The observations are carried out with 0.7-m telescope of the Institute of Astronomy (Kharkiv) and with 1-m telescope of the Crimean Astrophysical Observatory (Simeiz) in the standard Johnson-Cousins photometric system. Some observations were made as an optical support of radar observation of NEAs. We present the results of photometric observations of 21 NEAs obtained in 2004-2006 which include asteroid rotation properties, diameters and shapes.

scholarly journals EARLY KYIV OBSERVATIONS OF ASTEROIDS: ANALYSIS AND NEW REDUCTION WITH TYCHO-2 AND GAIA CATALOGS

2021 ◽  
Vol 34 ◽  
pp. 114-118
Author(s):  
S.V. Shatokhina ◽  
L.V. Kazantseva
Keyword(s):  
High Accuracy ◽  
Astronomical Observatory ◽  
National Academy Of Sciences ◽  
Positional Accuracy ◽  
Comparison Results ◽  
National University ◽  
Random Components ◽  
Academy Of Sciences ◽  
Positional Data ◽  
Gaia Dr2

For more than 50 years, the continuous photographic observations of asteroids have been carried outwith telescopes of the Astronomical Observatory of the Taras Shevchenko National University of Kyiv and the Main Astronomical Observatory of the National Academy of Sciences of Ukraine. About 3,000 photographic plates were obtained, some of which were exposed in 1908. We collected the data on more than 5,500 positions and magnitudes of asteroids on these astroplates taking into account all results of the processing of observations available in various publications and in the Minor Planet Center database. All positional data were compared with JPL ephemeris and analyzed. From different series of asteroid observations the values of positional accuracy were obtained, depending on the methods of measuring and processing the plates and reference catalogs of stars. In order to systematically improve the obtained asteroid positions, we evaluated the possibilities of reprocessing some of the earliest asteroid observations applying the modern star high accuracy catalogs. Using the Tycho-2, Gaia DR2, and Gaia EDR3 as the reference catalogs, the 590 astroplates exposed on the MAO NASU Double Long-Focus Astrograph (DLA) in 1952-1986 were reprocessed based on old plate measurements. All newly determined and previous original asteroid positions were compared with the JPL ephemeris. The comparison results show an improvement in the systematic and random components of the accuracy of coordinates for new positions of asteroids. When comparing the new positions of the asteroids  determined in the Tycho-2 and Gaia catalog systems, no significant changes in accuracy were found.

Current state and development of the minor planets research in Nikolaev Astronomical Observatory

2008 ◽  
Vol 56 (14) ◽  
pp. 1835-1838 ◽  
Author(s):  
Lyudmila Hudkova ◽  
Anatoliy Ivantsov ◽  
Gennadiy Pinigin ◽  
Alexander Shulga
Keyword(s):  
Astronomical Observatory ◽  
Minor Planets ◽  
Current State

Modeling asteroid shapes using BNAO Rozhen photometric data in combination with sparse data

2021 ◽  
Author(s):  
Gordana Apostolovska ◽  
Elena Vchkova Bebekovska ◽  
Galin Borisov ◽  
Andon Kostov ◽  
Zahary Donchev
Keyword(s):  
Weather Conditions ◽  
Sparse Data ◽  
Space Mission ◽  
Physical Characteristics ◽  
Photometric Data ◽  
Inversion Method ◽  
Physical Parameters ◽  
Minor Planets ◽  
Photometric Observations ◽  
Dense Data

<p>Our work aims to demonstrate how the use of our dense lightcurves in combination with sparse data from diverse sources will affect the results for obtaining the sidereal period, shape models, and ecliptic pole solution for a chosen asteroid.</p> <p>Photometric observations of minor planets are traditional at the Bulgarian National Astronomical observatory (BNAO) Rozhen. They started with photoelectric observations in 1991, and later have been continued as CCD photometric observations on all three telescopes: 2m Ritchey-Chretién-Coudé, 50cm/70cm, and 60cm Cassegrain. We hope that the new 1.5 m robotic telescope planned to be operational next year will be also partly devoted to the study of minor planets.</p> <p>Our target, 339 Dorothea, is a main-belt asteroid, a large member of the Eos dynamical family. For the last 8 years, between 2013 and 2021, the asteroid 339 Dorothea was observed at BNAO Rozhen during six apparitions and several dense lightcurve were obtained. We used these dense photometric data in lightcurve inversion method and reconstruct the model of the asteroid, determining its sidereal period, shape, and pole orientation. Afterward, using sparse data from the AstDys database with an accuracy of 0.01 mag in combination with the obtained dense data, new trials for calculating and improving the physical characteristics of the asteroid 339 Dorothea were made.</p> <p>Unlike very low photometric accuracy in ground-based sparse photometry, space missions have provided astronomers with sparse photometry with extremely high accuracy, for example, the ESA GAIA mission. The NEOWISE mission has observations only for a limited number of asteroids. Fortunately, we were able to find some sparse data for our target and use this accurate photometry in combination with our dense lightcurves for the reconstruction of the asteroid spin state and shape model.</p> <p>Due to bad weather conditions and limited allocation of observing time at the BNAO Rozhen dedicated to our project, we have at our disposal full and partial dense lightcurves obtained for several more asteroids in few different apparitions. Combining these dense data with ground-based or space mission sparse data will contribute to enlarging the database of asteroids with known physical characteristics. Enriching the number of asteroids with known physical parameters would provide more data for future statistical analysis and could help in answering the questions for the evolution of our Solar System. </p>

scholarly journals Global Astrophysical Telescope System — telescope No. 2

2013 ◽  
Vol 9 (S301) ◽  
pp. 437-438
Author(s):  
Krzysztof Kamiński ◽  
Roman Baranowski ◽  
Monika Fagas ◽  
Wojciech Borczyk ◽  
Wojciech Dimitrov ◽  
...  
Keyword(s):  
Variable Stars ◽  
Astronomical Observatory ◽  
Spectroscopic Observations ◽  
Photometric Observations ◽  
Nearly Continuous ◽  
Telescope System

AbstractWe present the new, second spectroscopic telescope of Poznań Astronomical Observatory. The telescope allows automatic simultaneous spectroscopic and photometric observations and is scheduled to begin operation from Arizona in autumn 2013. Together with the telescope located in Borowiec, Poland, it will constitute a perfect instrument for nearly continuous spectroscopic observations of variable stars. With both instruments operational, the Global Astrophysical Telescope System will be established.

scholarly journals NEW CCD TIMES OF MINIMA OF ECCENTRIC ECLIPSING BINARY SYSTEMS IN 2017-2019

2020 ◽  
pp. 1-16
Author(s):  
M.-J. Jeong ◽  
C.-H. Kim ◽  
M.-H. Song ◽  
E.-C. Sung ◽  
J.-H. Park ◽  
...  
Keyword(s):  
Binary Systems ◽  
Astronomical Observatory ◽  
Republic Of Korea ◽  
Eclipsing Binary ◽  
Photometric Observations

We present 88 times of minima for 56 eccentric eclipsing binary systems determined from photometric observations at the Sobaeksan Optical Astronomical Observatory (SOAO) in Republic of Korea from February 2017 to December 2019.

scholarly journals Аstronomical observatory of Taras Shevchenko National University of Kyiv in 2018

2019 ◽  
pp. 48-51
Author(s):  
V. Efimenko
Keyword(s):  
Cosmic Rays ◽  
Solar System ◽  
High Energy ◽  
Astronomical Observatory ◽  
Small Bodies ◽  
Fundamental Physics ◽  
Potential Source ◽  
National University ◽  
Wave Research ◽  
Scientific Results

At the beginning of 2017, 53 workers worked in the State Astronomical Observatory, of which 28 were scientists, including 6 doctors of sciences and 17 candidates of sciences. The structure of the observatory includes the sector astrometry and the small bodies of the solar system (the head of the sector is Kleshchonok V.V., Ph.D), the department of astrophysics (the head of the department is professor Zhdanov V.I., doctor of Science) and 2 observation stations (Lisnyky, Pylypovychi). During the year budget topics were carried out: “Fundamental physics and models of high-energy astrophysical phenomena”, scientific leader professor Zhdanov V.I., doctor of Science; “Cosmic factors of terrestrial cataclysms: observation, analysis, informatization”, scientific leader Rosenbush V.K., doctor of Science. Young scientists of the Observatory won the competition for financing the youth theme “Multi-wave research of cosmic sources of gamma radiation in the framework of the STA project”, scientific leader Ponomarenko V.O., Ph.D. Main scientific results. The potential source of the triplet of cosmic rays with energies above 1020 eV – magnetar SGR 1900 + 14 is found. The possible manifestations of the acceleration of the cosmic rays by the remnant of the Nebula, in which the magnetar SGR 1900 + 14 was born, was investigated. In order to monitor potentially dangerous bodies of the solar system at the observatory station (Lisnyky) 3323 observations were received from 70 comets and 103 asteroids, 3 new asteroids (2017 ST39, 2017 SV39, 2017 TS7) were officially confirmed by the International Center for Small Planets. In 2017, the staff of the Observatory published 4 monographs, 81 scientific articles, 36 of them in foreign publications; 78 reports have been made at 12 conferences.

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