1:21 PM 3/1/2023 Sirius Web Images News Blogs Scholar α CMa, 9 CMa, HD 48915, SAO 151881, HR 2491 Sirius (α CMa / α Canis Majoris / Alpha Canis Majoris) is the brightest star in the night-time sky, with a visual apparent magnitude of −1.47. This binary star system consists of a blue-white main sequence dwarf star and a faint white dwarf companion. It is located in the constellation Canis Major.Sirius can be seen from almost every inhabited region of the Earth's surface (those living north of 73.284 degrees can't see it) and, in the Northern Hemisphere, is known as a vertex of the Winter Triangle. The best time of year to view it is around January 1, when it reaches the meridian at midnight.Under the right conditions, Sirius can be observed in daylight with the naked eye. Ideally the sky must be very clear, with the observer at a high altitude, the star passing overhead, and the sun low down on the horizon. Full Article Text available from Wikipedia under the terms of the GNU Free Documentation License More technical information on Sirius available from SIMBAD Location RA: 6h45m8.9s DEC: -16°42m58.0s Messier 41 Web Images News Blogs Scholar NGC 2287 Open Cluster M41 (also known as Messier Object 41, Messier 41, M41, or NGC 2287) is an open cluster in the Canis Major constellation. It was discovered by Giovanni Batista Hodierna before 1654 and was perhaps known to Aristotle about 325 BC. M41 is lying about 4 degrees nearly exactly south of Sirius and contains about 100 stars. Among these are several red giants, the brightest being spectral type K3, and located near its center. The cluster is estimated to be moving away from us at 34 km/s. The diameter of the cluster is between 25 and 26 light years long. Its age is estimated at between 190 and 240 million years old. M41 may also be referred to as NGC 2287. Full Article Text available from Wikipedia under the terms of the GNU Free Documentation License More technical information on Messier 41 available from the NASA/IPAC Extragalactic Database and SIMBAD Location RA: 6h46m1.0s DEC: -20°45m24.0s β CMa Web Images News Blogs Scholar 2 CMa, HD 44743, SAO 151428, HR 2294 Beta Canis Majoris (β CMa / β Canis Majoris) is a star in the constellation of Canis Major. It also has the traditional name Murzim or Murzam.The traditional name is Arabic for 'The Herald', and probably refers to its position, heralding Sirius in the night sky (ie, rising before it). Murzim is a magnitude blue-white giant star. The brightness of Murzim varies between 1.95 and +2.00 in a six-hour period. It is a Beta Cephei variable star. Full Article Text available from Wikipedia under the terms of the GNU Free Documentation License More technical information on β CMa available from SIMBAD Location RA: 6h22m42.0s DEC: -17°57m21.0s ζ CMa Web Images News Blogs Scholar 1 CMa, HD 44402, SAO 196698, HR 2282 Zeta Canis Majoris (ζ CMa / ζ Canis Majoris) is a spectroscopic binary in the constellation Canis Major. It also has the traditional name Furud or Phurud, from the arabic فرد al-furud meaning the solitary ones. ζ Canis Majoris is approximately 336 light years from Earth.The primary component, ζ Canis Majoris A, is a blue-white B-type main sequence dwarf with an apparent magnitude of +3.02. It has an unseen companion, ζ Canis Majoris B. The two stars orbit around their common centre of mass once every 675 days. Full Article Text available from Wikipedia under the terms of the GNU Free Documentation License More technical information on ζ CMa available from SIMBAD Location RA: 6h20m18.8s DEC: -30°3m48.0s κ CMa Web Images News Blogs Scholar 13 CMa, HD 50013, SAO 197258, HR 2538 Kappa Canis Majoris (κ CMa / κ Canis Majoris) is a star in the constellation Canis Major.κ Canis Majoris is a blue-white B-type subgiant with a mean apparent magnitude of +3.50. It is approximately 790 light years from Earth. It is classified as a Gamma Cassiopeiae type variable star and its brightness varies from magnitude +3.78 to +3.97. Full Article Text available from Wikipedia under the terms of the GNU Free Documentation License More technical information on κ CMa available from SIMBAD Location RA: 6h49m50.5s DEC: -32°30m31.0s Adara Web Images News Blogs Scholar ε CMa, 21 CMa, HD 52089, SAO 172676, HR 2618 Epsilon Canis Majoris (ε CMa / ε Canis Majoris), is the second brightest star in the constellation Canis Major, and one of the brightest stars in the nighttime sky. It has the Bayer designation "epsilon" despite being the second brightest and not the fifth brightest star in its constellation. It also has the traditional name Adhara (sometimes spelled Adara). The name is from the Arabic word عذارى ‘aðāra’, "virgins".Adhara is a binary star, about 430 light years distant from Earth. The main star possesses an apparent magnitude of +1.5 and belongs to the spectral classification B2. It has a surface temperature of 25,000 K and emits a total radiation equal to 20,000 times that of the Sun. If this star were at the same distance as Sirius, it would appear 15 times brighter than the planet Venus. This star is also one of the brightest known extreme ultraviolet sources in the sky. The +7.5 magnitude companion star (the absolute magnitude amounts to −5.0) is at 7.5" away with a position angle of 161° of the main star. Despite the relatively large angular distance the components can only be resolved in large telescopes, since the main star is approximately 250 times brighter than its companion. Full Article Text available from Wikipedia under the terms of the GNU Free Documentation License More technical information on Adara available from SIMBAD Location RA: 6h58m37.5s DEC: -28°58m20.0s σ CMa Web Images News Blogs Scholar 22 CMa, HD 52877, SAO 172797, HR 2646 Sigma Canis Majoris (σ CMa / σ Canis Majoris) is a star in the constellation Canis Major. It is approximately 1220 light years from Earth.σ Canis Majoris is an orange K-type supergiant with a mean apparent magnitude of +3.49. It is classified as an irregular variable star and its brightness varies from magnitude +3.43 to +3.51. Full Article Text available from Wikipedia under the terms of the GNU Free Documentation License More technical information on σ CMa available from SIMBAD Location RA: 7h1m43.1s DEC: -27°56m5.0s δ CMa Web Images News Blogs Scholar 25 CMa, HD 54605, SAO 173047, HR 2693 Delta Canis Majoris (δ CMa / δ Canis Majoris) is a star in the constellation Canis Major. It also has the traditional name Wezen or Wesen. The traditional name comes from the Arabic وزن wazn, meaning a weight. δ Canis Majoris is a yellow-white F-type supergiant with an apparent magnitude of +1.83. Full Article Text available from Wikipedia under the terms of the GNU Free Documentation License More technical information on δ CMa available from SIMBAD Location RA: 7h8m23.5s DEC: -26°23m36.0s ω CMa Web Images News Blogs Scholar 28 CMa, HD 56139, SAO 173282, HR 2749 Omega Canis Majoris (ω CMa / ω Canis Majoris) is a star in the constellation Canis Major.ω Canis Majoris is a blue-white B-type subgiant with a mean apparent magnitude of +4.01. It is approximately 920 light years from Earth. It is classified as a Gamma Cassiopeiae type variable star and its brightness varies from magnitude +3.60 to +4.18. Full Article Text available from Wikipedia under the terms of the GNU Free Documentation License More technical information on ω CMa available from SIMBAD Location RA: 7h14m48.7s DEC: -26°46m22.0s η CMa Web Images News Blogs Scholar 31 CMa, HD 58350, SAO 173651, HR 2827 Eta Canis Majoris (η CMa / η Canis Majoris) is a star in the constellation Canis Major. It also has the traditional name Aludra.Aludra shines brightly in the skies in spite of a large distance from Earth due to being intrinsically many times brighter (absolute magnitude) than the Sun. A blue supergiant, Aludra has only been around a fraction of the time our Sun has, yet is already in the last stages of its life. It is still expanding and may be becoming a red supergiant, or perhaps has already passed that phase, but in either case it will go supernova within the next few million years. The name Aludra originates from the Arabic: عذرا al-‘aðrā "the virgin". In ancient times Arabic astrologers/astronomers referred to a group of four stars in the Canis Major constellation, also known as the "Greater Dog", as Al 'Adhara "the virgins". η Canis Majoris classified as a Alpha Cygni type variable star and its brightness varies from magnitude +2.38 to +2.48 Full Article Text available from Wikipedia under the terms of the GNU Free Documentation License More technical information on η CMa available from SIMBAD Location RA: 7h24m5.7s DEC: -29°18m11.0s ι CMa Web Images News Blogs Scholar 20 CMa, HD 51309, SAO 152126, HR 2596 Iota Canis Majoris (ι CMa / ι Canis Majoris) is a star in the constellation Canis Major.ι Canis Majoris is a blue-white B-type bright giant with a mean apparent magnitude of +4.36. It is approximately 3100 light years from Earth. It is classified as a Beta Cephei type variable star and its brightness varies from magnitude +4.36 to +4.40 with a period of 1.92 hours. Full Article Text available from Wikipedia under the terms of the GNU Free Documentation License More technical information on ι CMa available from SIMBAD Location RA: 6h56m8.2s DEC: -17°3m15.0s γ CMa Web Images News Blogs Scholar 23 CMa, HD 53244, SAO 152303, HR 2657 Gamma Canis Majoris (γ CMa / γ Canis Majoris) is a star in the constellation Canis Major. It also has the traditional name Muliphein, not to be confused with Muhlifain, which is Gamma Centauri; both names derive from the same Arabic root, محلفين muħlifayn.γ Canis Majoris is a blue-white B-type bright giant with an apparent magnitude of +4.11. It is approximately 402 light years from Earth.It is unclear exactly why this relatively faint star was given the "gamma" designation, but it is possibly because it is in the same part of the constellation as Sirius (alpha) and Murzim (beta). Full Article Text available from Wikipedia under the terms of the GNU Free Documentation License More technical information on γ CMa available from SIMBAD Location RA: 7h3m45.5s DEC: -15°37m60.0s θ CMa Web Images News Blogs Scholar 14 CMa, HD 50778, SAO 152071, HR 2574 Theta Canis Majoris (θ CMa / θ Canis Majoris) is a star in the constellation Canis Major.θ Canis Majoris is an orange K-type giant with an apparent magnitude of +4.08. It is approximately 252 light years from Earth. Full Article Text available from Wikipedia under the terms of the GNU Free Documentation License More technical information on θ CMa available from SIMBAD Location RA: 6h54m11.4s DEC: -12°2m19.0s 1:26 PM 3/1/2023