... March 26, 1997 . The City Comet . ... Explanation : Undaunted by the artificial glow from one of the most famous urban skylines on Earth, comet Hale-Bopp shines above the city of New York, USA . ... The comet lies at a distance of about 120 million miles from New York. As bright as this comet has turned out to be, it might have been even brighter. ... At that distance, Hale-Bopp might have been 100 times brighter than it is now, reaching -5th or -6th magnitude ! ... About APOD > . ...
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... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. May 25, 1999 . NGC 6872: A Stretched Spiral . ... Measuring over 700,000 light years across from top to bottom, NGC 6872 is one of the largest barred spiral galaxies known. ... Of particular interest is NGC 6872's spiral arm on the upper left, as pictured above , which exhibits an unusually high amount of blue star forming regions . ...
. I measured my limiting magnitude on this picture at about Mag 18.9. I also did some photometry near for the SN positon, and I found a star liked object at about Mag 17.6. I think this object is 1999br. This image is deconvoluted, but I measured the magnitude pre-deconvulution. Kereszty Zsolt . Hungary, Miskolc . Back to Bright Supernovae . David Bishop Last modified: Thu Apr 15 11:44:03 EDT 1999
... E.V. Kazarovets, N.N . Samus , O.V. Durlevich, S.V. Antipin, M.S. Frolov, N.N . Kireeva, E.N. Pastukhova Institute of Astronomy of Russian Academy of Sciences and Sternberg State Astronomical Institute of ... the Moscow State University ================================================================================ The 74th Special Name-list of Variable Stars , A.V. Kazarovets, N.N . Samus , O.V. Durlevich, S.V. Antipin, M.S.,Frolov, ... 3323 Samus, N.N., IBVS, 1997, No. ...
... Путеводитель астронома по интернет: . ... Интернет как астрономическая среда . ... Астрономические данные в Сети - где искать и как пользоваться? ... Средство общения, коммуникации и организации для научных проектов, самих специалистов и любителей астрономии. ... Астрономический раздел Yahoo! http://dir.yahoo.com/Science/Astronomy/ , например, содержит более двух с половиной тысяч сайтов. ... Лидеры публичного жанра Сети – в мире и России. ... Сеть – как хранилище астрономических данных. ...
... The distance scales of the objects are matched both by comparing the first derivatives of the angular velocity determined separately from radial velocities and proper motions and by the statistical-parallax method. ... Good agreement between the inferred 0 and our calculations based on space velocities suggests that the Lindblad relation holds throughout the entire sample volume. ... Brandt and Blitz (1993) published the distances and radial velocities for a total of 206 H II-regions. ... Astron. ...