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NGC 1807
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NGC 1807 (als OCL 462, Lund 154, Mel 29 and Cr 59) is a magnitude +7.0 asterism located in the constellation Taurus, near the border with Orion, about 8° east of the star Aldebaran. The asterism consists of a chain of 6-7 yellow-orange stars with magnitudes between 8.9 and 10.2 lying a few arcminutes aw...
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NGC 2269
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NGC 2269 (als OCL 524) is a magnitude +10.0 open star cluster located 5500 light-years away in the constellation Monoceros. The cluster was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) reflecting telescope at Datchet, Berkshire, on the 24th January 178...
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NGC 2180
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NGC 2180 is a magnitude +6.0 open star cluster located 2968 ±489 light-years away in the constellation Orion. The cluster is close to the magnitude +7.9 star HD 29212. The cluster was discovered by British astronomer William Herschel using a 47.5 cm (18.7 inch) reflecting telescope at Datchet, B...
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NGC 2265
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NGC 2265 is a magnitude +10.0 group of stars located 7045 ±326 light-years away in the constellation Gemini. The asterism was discovered by British astronomer John Herschel using a 47.5 cm (18.7 inch) reflecting telescope at Windsor Road, Slough, on the 23rd January 1832. Right Ascension 06h 41...
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NGC 2203
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NGC 2203 (also ESO 34-SC4) is a magnitude +12.0 open cluster located in the Large Magellanic Cloud in the constellation Mensa. The cluster was discovered by British astronomer John Herschel using a 47.5 cm (18.7 inch) reflecting telescope at Feldhausen, Claremont, Cape Town, on the 23rd January 1...
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NGC 2849
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NGC 2849 (also OCL 756 and ESO 314-SC13) is a magnitude +12.5 open cluster located in the constellation Vela. The cluster was discovered by British astronomer John Herschel using a 47.5 cm (18.7 inch) reflecting telescope at Feldhausen, Claremont, Cape Town, on the 22nd January 1835. Right Ascen...
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NGC 2587
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NGC 2587 (also OCL 706 and ESO 431-SC7) is a magnitude +9.2 open cluster located in the constellation Puppis. The cluster was discovered by British astronomer John Herschel using a 47.5 cm (18.7 inch) reflecting telescope at Feldhausen, Claremont, Cape Town, on the 22nd January 1835. Right Asce...
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V4641 Sgr
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V4641 Sgr.kmz Google Sky File
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Galactic HII Regions
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Title: The WISE Catalogue of Galactic HII Regions Author: L.D. Anderson, T.M. Bania, Dana S. Balser, V. Cunningham, T.V. Wenger, B.M. Johnstone, W.P. Armentrout Using data from the all-sky Wide-Field Infrared Survey Explorer (WISE) satellite, we made a catalog of over 8000 Galactic HII regions...
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AE Aquarii
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On August 30-August 31, 2005 two space-based and four professional ground-based observatories are scheduled to observe the cataclysmic variable star AE Aquarii Each of the observatories covers a different wavelength of light.
Amateur astronomers have been asked to cover the visibl...
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HT Cassiopeiae
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Title: Cyclical period changes in HT Cas: a clear difference between systems above and below the period gap Authors: B. W. Borges, R. Baptista, C. Papadimitriou, O. Giannakis We report the identification of cyclical changes in the orbital period of the eclipsing cataclysmic variable HT Cas. We m...
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PSR J0737-3039
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XMM-Newton has, for the first time, detected signals from both stars of a binary pulsar system in X-rays, unveiling a scientific goldmine. Each star of the closely-packed system is a dense neutron star, spinning extremely fast, radiating X-rays in pulses. The binary pulsar PSR J0737-3039 was fi...
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GJ 1214b
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Title: The Nature of the Atmosphere of the Transiting Super-Earth GJ 1214b Authors: E. Miller-Ricci, J. J. Fortney The newly discovered planet GJ 1214b is the first known transiting super-Earth requiring a significant atmosphere to explain its observed mass and radius. Models for the structure...
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NGC 34
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Title: Remnant of a "Wet" Merger: NGC 34 and Its Young Massive Clusters, Young Stellar Disk, and Strong Gaseous Outflow Authors: Francois Schweizer (OCIW), Patrick Seitzer (U. Michigan) This paper presents new images and spectroscopy of NGC 34 (Mrk 938) obtained with the du Pont 2.5-m...
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NGC 2483
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NGC 2483 (also OCL 677 and ESO 430-SC2) is a magnitude +7.6 open cluster, angular size of 9.0', located ~5410 light-years away in the constellation Puppis. The open cluster transits around midnight, 19th January. The cluster was discovered by British astronomer John Herschel using a 47.5 cm (18....
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