This brightest of stars also shares proper motion with the ursa major moving group which include the five central stars of the big dipper skill level: beginner suggested gear: orion spaceprobe 130 eq reflector telescope , orion versago e-series 90mm altazimuth refractor. Orion is a prominent constellation located on the celestial equator and visible throughout the world it is one of the most conspicuous and recognizable constellations in the night sky. The 1c group lies within the orion sword region but projected about 60 to 200 light years in front of the orion nebula and the orion a molecular cloud the 1c group is about 3 to 6 million years old the most recent group to form is the 1d subgroup which represents the stars of the orion nebula and ngc 1977. Usually a star cluster looks like a tiny fuzz ball, but the hyades appears to be a huge and distinct group of stars spread out over the sky because it's so close like the pleiades, the group consists of about 400-500 stars total.
The eridanus group, also known as the eridanus cloud, is a group of galaxies roughly 75 million light years distant in eridanus the group consists of about 200 galaxies, and about 70% of them are categorized as spiral and irregular galaxies. The three stars that gleam and glow and grace orion's belt are about as distinct as can be on a cold winter night, or even in the early spring before they start their slide out of sight into the west. The current database is a representation of table 6 from gagne et al (1995) (notice that the data given in tables 2 and 3 of this reference is included in the heasarc database orionxray, qv) which lists x-ray and other data for 175 orion stars for which spectral types, spectroscopic rotational velocities, and/or spot-modulated photometric.
Stars and planets identification orion has a distinct simetric shape in its center is the so called orion belt - a group of 3 aligned stars some say the. The orion nebula is farther away than any of the naked eye stars at a distance of about 1,600 light-years one light-year is the distance light travels in a single year, about 6 trillion miles (10. The multiple star theta1 ori, the northern star of the deggar of the hunter is also called the trapezium it is located in the heart of the orion nebula this group of stars has been formed from the gas of the nebula, which now glows in their light.
The brighter group contains two yellow-white f-type stars - a subgiant and a dwarf - and a fainter companion the fainter group consists of two k-type stars  pi scorpii, another multiple star system, is composed of a contact binary star of the beta lyrae type and a fainter, more distant companion. Orion the constellation orion is one of the easiest to recognize because of a group of three stars the three stars form a straight line that is often called orion's belt the three stars form a straight line that is often called orion's belt. The third star down in orion's sword is not a star at all, but the orion nebula if you get a pair of binoculars and look closely at this star, you will see not one, but many stars this is a sight that is easy for anyone to see, even without a telescope. Orion, the hunter, is by far the most famous seasonal constellationno other is more distinct or bright as this northern winter constellation the famous orion's belt makes the hunter easy to find in the night sky.
These are two of the stars that form 'orion's sword', but the lower star is actually a nebula, known as the orion nebula or great nebula of orion orion nebula, hubble telescope, image courtesy nasa. The nebula lies about 1500 light years from earth within the 'sword of orion' - below the three main stars that form the belt of the orion constellation. The constellation orion - the hunter one of the most easily recognized of all constellations, orion lies near to the milky way, and thus contains many open clusters and some of the best nebulae in the heavens.
Nearest, brightest and most spectacular of the gaseous nebulae, the orion nebula is being carefully examined by astronomers who hope to unlock the secrets of star birth within the nebula are found youthful stars that have just begun to shine, stars-to-be that have not yet flicked the `on' switch of. We report here on the photometric and kinematic properties of a well-defined group of nearly 200 low-mass pre-main-sequence stars, concentrated within ~1° of the early-b star 25 ori, in the orion ob1a subassociation. The orion ob1 stellar association is a contingent group of several dozen hot giant stars of spectral types o and b associated are thousands of lower-mass stars, and a (smaller but significant) number of protostars.