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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Astronomy Reports</journal-id><journal-title-group><journal-title xml:lang="en">Astronomy Reports</journal-title><trans-title-group xml:lang="ru"><trans-title>Астрономический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0004-6299</issn><issn publication-format="electronic">3034-5170</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">686613</article-id><article-id pub-id-type="doi">10.31857/S0004629925040052</article-id><article-id pub-id-type="edn">FYIJXE</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">APSIDAL MOTION AND PHYSICAL PARAMETERS OF V361 CAM</article-title><trans-title-group xml:lang="ru"><trans-title>ДВИЖЕНИЕ ЛИНИИ АПСИД И ФИЗИЧЕСКИЕ ПАРАМЕТРЫ V361 CAM</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Volkov</surname><given-names>I. M.</given-names></name><name xml:lang="ru"><surname>Волков</surname><given-names>И. М.</given-names></name></name-alternatives><email>hwp@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Naroenkov</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Нароенков</surname><given-names>С. А.</given-names></name></name-alternatives><email>snaroenkov@inasan.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Volkova</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Волкова</surname><given-names>А. С.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Lomonosov Moscow State University, Sternberg Astronomical Institute</institution></aff><aff><institution xml:lang="ru">Московский государственный университет им. М. В. Ломоносова, Государственный астрономический институт им. П. К. Штернберга</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Institute of Astronomy of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Федеральное государственное бюджетное учреждение Российской академии наук Институт астрономии</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-04-15" publication-format="electronic"><day>15</day><month>04</month><year>2025</year></pub-date><volume>102</volume><issue>4</issue><issue-title xml:lang="en">VOL 102, NO4 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 102, №4 (2025)</issue-title><fpage>298</fpage><lpage>316</lpage><history><date date-type="received" iso-8601-date="2025-07-03"><day>03</day><month>07</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, The Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">The Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0004-6299/article/view/686613">https://journals.eco-vector.com/0004-6299/article/view/686613</self-uri><abstract xml:lang="en"><p>Our multicolour photometric measurements ofV361 Cam (P = 8.64d, V = 10.79m, e = 0.12, B5 IV+B9 V) over the past 16 years, as well as TESS data, allowed us to determine for the first time the main physical characteristics of the system and measure the apsidal rotation velocity. The following physical parameters of the component stars were obtained: T1 = 15 400 ± 300 K, M1 = 6.0 ± 0.4 MQ, R1 = 5.03 ± 0.05 Ro, T2 = 11700 ± 250 K, М2 = 2.8 ± 0.2MQ, R2 = 1.94 ± 0.04RQ. The photometric parallax of 0.00035" ± 0.000001" matches the Gaia measurement of 0.00035" ± 0.00003". The apsidal rotation velocity is wobs = 0.024 ± 0.007°/year, which is less than the theoretical value underthe synchronism condition wtheor = 0.056 ± 0.006°/year. The age of the system, assuming solar chemical composition, is 70 Myr. Both components are pulsating в Cephei variables.</p></abstract><trans-abstract xml:lang="ru"><p>Наши многоцветные фотометрические измерения V361 Cam (Р = 8.64d, V = 10.79m, е = 0.12, B5 IV+B9 V) в течение 16 последних лет, а также данные TESS позволили впервые определить основные физические характеристики системы и измерить скорость апсидального вращения. Получены следующие физические параметры звезд-компонентов: Т1 = 15 400 ± 300 K, М1 = 6.0 ± 0.4MQ, R1 = 5.03 ± 0.05 Rq, Т2 = 11700 ± 250 K, М2 = 2.8 ± 0.2MQ, R2 = 1.94 ± 0.04RQ. Фотометрический параллакс, 0.00035" ± 0.000001", совпадает с измерением Gaia, 0.00035" ± 0.00003". Значение скорости апсидального вращения равно wobs = 0.024 ± 0.007°/год, что меньше теоретического значения при условии синхронизма, wtheor = 0.056 ± 0.006°/год. Возраст системы при условии солнечного химического состава равен 70 млн. лет. Оба компонента являются пульсирующими переменными звездами типа в Цефея.</p></trans-abstract><kwd-group xml:lang="en"><kwd>eclipsing binary stars</kwd><kwd>fundamental parameters of stars</kwd><kwd>individual stars (V361 Cam)</kwd><kwd>photometric observations</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>двойные затменные звезды</kwd><kwd>фундаментальные параметры звезд</kwd><kwd>индивидуальные звезды (V361 Cam)</kwd><kwd>фотометрия звезд</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>S.A. Otero, P. Wils, G. Hoogeveen, and P.A. Dubovsky, Inform. Bull. Var. Stars, № 5681 (2006).</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>P.R. Woźniak, W.T. Vestrand, C.W. Akerlof, R. Balsano, et al., Astron. J. 127(4), 2436 (2004).</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>И.М. Волков, Н.С. 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