| A_Mystery_of_Space__Stars Learn about the fascinating universe, especially stars at this ThinkQuest site. There are two versions of the site to choose from, one for younger kids (under 12), and one for older kids (13 and over |
| Scientific_American_Explorations__A_Parade_of_New_Planets Sightings of extrasolar planets are increasing. |
| Solar_and_Stellar_Seismology Explains the study of a star's oscillations to determine the interior chemical composition. |
| Space_Telescope_Science_Institute A small Hubble telescope image gallery of Quasars. |
| SpaceWander_Virtual_Space_Trip! Multimedia experience of flying by spaceship through the solar system. Visit each planet. Real space pictures from NASA. In English, French, Italian, Spanish and Russian. Recommended for kids. |
| Spectra_and_Spectra_Analysis__Stars Includes a section on spectral classification of stars. |
| Star_Data_Pages Provides detailed information about stars: positions, proper motion, radial velocity, magnitudes, spectral class, color index, catalogue references, data about multiple star systems (i.e. orbital elem |
| Star_Journey_@_nationalgeographic_com Star Journey. Journey through the stars with National Geographic Online. View the nighttime sky with popular National Geographic Star Chart... |
| Star_Maps Three high resolution star maps in .tif format for download. Tycho, Hipparcos and Yale bright star maps available. |
| Stars_and_Galaxies Behavior of stars, generation of energy, their origin, and life cycle. Also includes a wide range of interesting pictures of galaxies and related phenomena that can be observed in the universe through |
| Summer_Sky_Tour A guide to give a tour of the summer night sky. |
| White_Dwarfs,_Neutron_Stars,_And_Black_Holes All-text page on the various stages in the discovery and development of theories of white dwarfs, neutron stars and black holes. |
| Alina_Simona_Rusu Researcher whose publications include coping strategies in mice, chemical communication in mammals and cognitive ethology. |
| Animal_and_Plant_Sciences Research conducted at University of Sheffield, United Kingdom, that includes evolution and behavior studies. |
| Animal_Behavior Daniel Mills and Gill Sheppard describe an evolutionary approach to the analysis, assessment and treatment of behavior problems. |
| Animal_Behavior_and_Sociobiology Lecture on sociobiological behavior based on experimental animal observation from McMaster University, Canada. |
| Animal_Behavior_Lab Overview of current research at Macquarie University, Australia, with detailed material on each project. |
| Archives_of_Ethology Archives of an unactive internet discussion group on animal behavior that span over an eight year period. |
| Baboon_and_Impala_Together Website discusses the intermingled relationship the two species share. Offers scientific observations and images. |
| Bee_World Uses modern technology to demonstrate the life cycle of bees in real time through the use of a live Internet feed. |
| Behavioral_Ecology_Research_Group Research on the evolution of social systems and social learning at the University of Queensland, Australia. |
| Biopsy Annotated links and other resources on animal behavior, behavioral endocrinology and evolutionary and biological psychology. |
| Bird_Behavior An interdisciplinary journal that publishes research on descriptive and experimental analyses of species-typical avian behavior. |
| Center_for_the_Integrative_Study_of_Animal_Behavior Information from Indiana University's program on animal behavior. |
| Chimpanzee_Cultures A searchable database of chimpanzee cultural behaviors. |
| Dolphin_Institute Dedicated to conservation of and education about dolphins and whales. Research projects include dolphin echolocation. |
| Encyclopedia_of_Psychology_-_Animal_Behavior Annotated links to resources on animal behavior and instincts. |
| Ethology Tables of contents, contacts and subscription information from this journal by Blackwell Publishing. |
| Fauna_Communications_Research Institute that researches bioacoustics and animal communication, especially of endangered species. |
| Feral_Cats Information on a study of feral cats in Portsmouth Naval Dockyard, United Kingdom, conducted by Jane Dards in the 1970s. |
| Honey_Bee_Research_at_the_University_of_Illinois Research in Gene E. Robinson's lab that studies the mechanisms of social behavior in honey bees. |
| Insect_Behavior_and_Chemical_Ecology_Lab Research interests of the University of California, Riverside, including evolution of insect mating signals. |
| Konrad_Lorenz_Institute_for_Ethology Austrian organization that investigates major unsolved problems in behavioral and evolutionary ecology. |
| Movie_Archives_of_Animal_Behavior An online animal behavior video database available in various formats. Most clips filmed in Japan. |
| Ontologies_for_Ethology Peter E. Midford's research in coding animal behavior descriptions, particularly ethograms using ontology. |
| Phenology Animal activity and growth responses to seasonal climatic changes. Discussion of phenology data on animal cycles of life. |
| Research_Station_Petite_Camargue_Alsacienne Affiliated with the University of Basel, Switzerland. Focuses on the behavioral ecology of passerines. |
| Slagsvold_Group A research group at the University of Oslo, Norway. Primary focus is on the study of ual imprinting in small passerines. |
| University_of_Los_Andes_Frog_Research Group working on frog behavior and ecophysiology at Universidad de Los Andes, Bogota-Colombia. |
| Whiting_Lab Research conducted at Wits University in South Africa that focuses on the behavior and evolutionary ecology of lizards and cichlids. |
Julian Date: d U.T. | Home | Astronomical Resources: Astronomical Calendar Constellations Table 50 Brightest Stars 50 Nearest Stars Astrolinks Bookstore The 50 Brightest Stars : Here we present our Bright Star Catalog. It is intended for use as a source of some basic astronomical and astrophysical data for the 50 brightest stars visible from Earth. For each star, this table contains the proper name, Bayer and/or Flamsteed name, visual apparent magnitude, distance in light years, accuracy of the distance in per cent, absolute magnitude, spectral types, equatorial coordinates for J2000.0 and Hipparcos catalog number. Stars are listed in the order of decreasing visual magnitude. RIGHT : Image of Sirius taken in X-Ray light. Sirius is the brightest star in the night sky, visible in the constellation of the Big Dog. In 1862 Sirius was discovered to be a binary star system, with a companion star. The main star, called Sirius A, is the one you see in the sky. Sirius A is about 23 times the luminosity of our Sun and 2.1 times the mass. Its companion, called Sirius B is much fainter and was the first white dwarf star discovered. Sirius B has a mass equal to that of the Sun, but its diameter is 40 to 50 times smaller. At a distance of only 8.7 light years, Sirius is the 5th nearest star system known. 
Image of Sirius in X-Ray light. Brightest Stars ] Field List Field Description Units Name proper name Ident. Bayer/Flamsteed identification Const. constellation abbreviation - click here V. Mag. apparent visual magnitude ( Johnson ) mag Dist. distance in light years l.y. ( light years ) Prec. precision of the distance % A. Mag. absolute visual magnitude M(V) mag Spec. Type spectral type RA right ascension ( J2000.0 ) hh mm ss.d DEC declination ( J2000.0 ) gg mm ss Hip Hipparcos catalog number # Name Ident. Const. V Mag Dist. Prec A. Mag. Spec. Type RA J2000.0 DEC J2000 HIP # 1 Sirius 9Alpha CMa -1.46 8.6 0.4 1.43 A1Vm 06 45 08.9 -16 42 58 32349 1 2 Canopus Alpha Car -0.72 312.6 5.1 -5.63 F0II 06 23 57.1 -52 41 45 30438 2 3 Arcturus 16Alpha Boo -0.04 36.7 0.8 -0.30 K1.5IIIFe-0.5 14 15 39.7 +19 10 57 69673 3 4 Rigil Kentaurus Alpha1 Cen -0.01 4.4 0.2 4.34 G2V 14 39 35.9 -60 50 07 71683 4 5 Vega 3Alpha Lyr 0.03 25.3 0.4 0.58 A0Va 18 36 56.3 +38 47 01 91262 5 6 Capella 13Alpha Aur 0.08 42.2 1.2 -0.48 G5IIIe+G0III 05 16 41.4 +45 59 53 24608 6 7 Rigel 19Beta Ori 0.12 772.5 19.2 -6.75 B8Ia: 05 14 32.3 -08 12 06 24436 7 8 Procyon 10Alpha CMi 0.38 11.4 0.3 2.66 F5IV-V 07 39 18.1 +05 13 30 37279 8 9 Achernar Alpha Eri 0.46 143.7 2.5 -2.76 B3Vpe 01 37 42.9 -57 14 12 7588 9 10 Betelgeuse 58Alpha Ori 0.50 427.3 21.5 -5.09 M1-2Ia-Iab 05 55 10.3 +07 24 25 27989 10 11 Hadar Beta Cen 0.61 525 9 -5.42 B1III 14 03 49.4 -60 22 23 68702 11 12 Altair 53Alpha Aql 0.77 16.8 0.5 2.21 A7V 19 50 47.0 +08 52 06 97649 12 13 Aldebaran 87Alpha Tau 0.85 65.1 1.9 -0.65 K5+III 04 35 55.2 +16 30 33 21421 13 14 Antares 21Alpha Sco 0.96 603.7 31.1 -5.38 M1Ib + B2.5V 16 29 24.4 -26 25 55 80763 14 15 Spica 67Alpha Vir 0.98 262.1 6.9 -3.55 B1III-IV+B2V 13 25 11.6 -11 09 41 65474 15 16 Pollux 78Beta Gem 1.14 33.7 0.9 1.07 K0IIIb 07 45 18.9 +28 01 34 37826 16 17 Fomalhaut 24Alpha PsA 1.16 25.1 0.7 1.73 A3V 22 57 39.1 -29 37 20 113368 17 18 Mimosa Beta Cru 1.25 352.4 6.6 -3.92 B0.5III 12 47 43.2 -59 41 19 62434 18 19 Deneb 50Alpha Cyg 1.25 3227.7 56.4 -8.73 A2Ia 20 41 25.9 +45 16 49 102098 19 20 Acrux Alpha1 Cru 1.33 320.6 6.6 -3.63 B0.5IV 12 26 35.9 -63 05 57 60718 20 21 Regulus 32Alpha Leo 1.35 77.5 1.9 -0.53 B7V 10 08 22.3 +11 58 02 49669 21 22 Adhara 21Epsilon CMa 1.50 430.6 7.5 -4.10 B2II 06 58 37.5 -28 58 20 33579 22 23 Gacrux Gama Cru 1.63 87.9 1.8 -0.52 M3.5III 12 31 09.9 -57 06 48 61084 23 24 Shaula 35Lambda Sco 1.63 702.6 19.4 -5.04 B2IV+B 17 33 36.5 -37 06 14 85927 24 25 Bellatrix 24Gama Ori 1.64 242.9 7.3 -2.72 B2III 05 25 07.9 +06 20 59 25336 25 # Name Ident. Const. V Mag Dist. Prec A. Mag. Spec. Type RA J2000.0 DEC J2000 HIP # 26 El Nath 112Beta Tau 1.65 131 3.5 -1.37 B7III 05 26 17.5 +28 36 27 25428 26 27 Miaplacidus Beta Car 1.68 111.1 1.6 -0.98 A2IV 09 13 12.0 -69 43 02 45238 27 28 Alnilan 46Epsilon Ori 1.70 1341.6 37.4 -6.37 B0Ia 05 36 12.8 -01 12 07 26311 28 29 Al Na'ir Alpha Gru 1.74 101.4 2.5 -0.72 B7IV 22 08 14.0 -46 57 40 109268 29 30 Alioth 77Epsilon UMa 1.77 80.9 1.5 -0.20 A0pCr 12 54 01.7 +55 57 35 62956 30 31 Gama2 Vel 1.78 840.2 13.7 -5.28 WC8+O9I 08 09 32.0 -47 20 12 39953 31 32 Mirfak 33Alpha Per 1.79 591.7 12 -4.50 F5Ib 03 24 19.4 +49 51 40 15863 32 33 Dubhe 50Alpha UMa 1.79 123.6 2 -1.10 K0IIIa 11 03 43.7 +61 45 03 54061 33 34 Wezen 25Delta CMa 1.84 1791.2 30.8 -6.86 F8Ia 07 08 23.5 -26 23 36 34444 34 35 Kaus Australis 20Epsilon Sgr 1.85 144.6 4.5 -1.38 B9.5III 18 24 10.3 -34 23 05 90185 35 36 Avior Epsilon Car 1.86 631.8 9.5 -4.58 K3III+B2:V 08 22 30.8 -59 30 35 41037 36 37 Alkaid 85Eta UMa 1.86 100.6 2.3 -0.59 B3V 13 47 32.4 +49 18 48 67301 37 38 Sargas Theta Sco 1.87 271.9 7 -2.74 F1II 17 37 19.2 -42 59 52 86228 38 39 Menkaliman 34Beta Aur 1.90 82.1 2 -0.10 A2IV 05 59 31.7 +44 56 51 28360 39 40 Atria Alpha TrA 1.92 415.3 8 -3.61 K2IIb-IIIa 16 48 39.9 -69 01 40 82273 40 41 Alhena 24Gama Gem 1.93 104.8 7.5 -0.60 A0IV 06 37 42.7 +16 23 57 31681 41 42 Peacock Alpha Pav 1.94 183.1 3.9 -1.81 B2IV 20 25 38.9 -56 44 06 100751 42 43 Delta Vel 1.96 79.7 0.9 0.02 A1V 08 44 42.2 -54 42 30 42913 43 44 Mirzam 2Beta CMa 1.98 499.2 10.1 -3.95 B1II-III 06 22 42.0 -17 57 21 30324 44 45 Castor 66Alpha Gem 1.98 51.5 1.9 0.99 A1V 07 34 36.0 +31 53 18 36850 45 46 Alphard 30Alpha Hya 1.98 177.2 4.2 -1.70 K3II-III 09 27 35.2 -08 39 31 46390 46 47 Hamal 13Alpha Ari 2.00 65.9 2 0.47 K2-IIICa-1 02 07 10.4 +23 27 45 9884 47 48 Polaris 1Alpha UMi 2.02 431.2 6.3 -3.59 F7:Ib-II 02 31 48.7 +89 15 51 11767 48 49 Nunki 34Sigma Sgr 2.02 224.2 6.1 -2.17 B2.5V 18 55 15.9 -26 17 48 92855 49 50 Deneb Kaitos 16Beta Cet 2.04 95.8 2.4 -0.30 K0III 00 43 35.2 +52 59 12 3419 50 # Name Ident. Const. V Mag Dist. Prec A. Mag. Spec. Type RA J2000.0 DEC J2000 HIP # © Cosmobrain Astronomy - All Rights Reserved. Brightest Stars Catalog by : Eduardo Soares References : =================================================== The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) Hoffleit E.D., Warren Jr. W.H. Yale University(1991) =================================================== The Hipparcos and Tycho Catalogues European Space Agency (ESA 1997) =================================================== Special Thanks : - Karen O'Flaherty ( European Space Agency ) - Michael Perryman ( European Space Agency ) - François Ochsenbein ( Observatoire Astronomique de Strasbourg ) 
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