[50] It is an Alpha Cygni variable that undergoes periodic non-radial pulsations, which cause its brightness to cycle from magnitude 2.93 to 3.08 over a 24.44-day interval. [45] Classified as an Alpha Cygni type variable star, Aludra varies in brightness from magnitude 2.38 to 2.48 over a period of 4.7 days. It is a very young open cluster as its member stars are only a few million years old. Kappa Canis Majoris (κ CMa / 13 Canis Majoris / HD 50013) ye una estrella na constelación del Can Mayor de magnitú aparente +3,51. The red hypergiant VY Canis Majoris is one of the largest stars known, while the neutron star RX J0720.4-3125 has a radius of a mere 5 km.
More details on objects' alternative names can be found at. [96] Supernovae have been observed in NGC 2207 in 1975 (type Ia SN 1975a),[97] 1999 (the type Ib SN 1999ec),[98] 2003 (type 1b supernova SN 2003H),[99] and 2013 (type II supernova SN 2013ai). However, there remains debate over whether it represents a disrupted dwarf galaxy or in fact a variation in the thin and thick disk and spiral arm populations of the Milky Way. [87] Its most luminous stars have already evolved into giants. Your guide to the Solar System and the night sky. the Hertzsprung–Russell diagram. Investigation of the area yielded only ten RR Lyrae variables—consistent with the Milky Way's halo and thick disk populations rather than a separate dwarf spheroidal galaxy.
[75], Seven star systems have been found to have planets.
[84] Meanwhile, FS Canis Majoris is another star with infra-red emissions indicating a compact shell of dust, but it appears to be a main-sequence star that has absorbed material from a companion. [6], At the southern limits of the constellation lie Kappa and Lambda Canis Majoris. Also called Mirzam or Murzim, Beta is a blue-white Beta Cephei variable star of magnitude 2.0, which varies by a few hundredths of a magnitude over a period of six hours. It is bright because of its proximity to the Solar System.
The figure of 2,791.11 that I have given is based on the value in the Simbad Hipparcos Extended Catalogue at the University of Strasbourg from 2012.
Super-Earth and Neptune-mass Planets in Multiple Planet Systems HD 47186 and HD 181433", "The HARPS Search for Southern Extrasolar Planets XXIII. It has a companion of magnitude 8.1. [44], Also called Aludra, Eta Canis Majoris is a blue-white supergiant of spectral type B5Ia with a luminosity 176,000 times and diameter around 80 times that of the Sun. [24], Canis Major is a constellation in the Southern Hemisphere's summer (or northern hemisphere's winter) sky, bordered by Monoceros (which lies between it and Canis Minor) to the north, Puppis to the east and southeast, Columba to the southwest, and Lepus to the west. [54], Canis Major is also home to many variable stars. [71] Its four main component stars are hot O-type stars, with a combined mass 80 times that of the Sun and shining with 500,000 times its luminosity, but little is known of their individual properties. Kappa Canis Majoris
[85], The band of the Milky Way goes through Canis Major, with only patchy obscurement by interstellar dust clouds. Latitude: 51° 28’ 47” N [65][66] VY CMa is also surrounded by a red reflection nebula that has been made by the material expelled by the strong stellar winds of its central star. κ Canis Majoris is a blue-white B-type subgiant with a mean apparent magnitude of +3.50.
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