It is this heavenly constellation of the northern hemisphere of the sky Tri (the abbreviated Latin name of Triangulum) is one of the most interesting objects for amateur research.
Location in the sky
In a dark night, in the absence of bright sourceslight, we can detect it in the form of a figure clearly formed by three stars, similar to an elongated triangle. Stellar magnitudes are expressed as follows: 3m and two by 4m.
Therefore, it can be seen with the naked eye.
By neighboring constellations, you can navigate the starry sky to find the constellation Triangle. This will help you Andromeda, Perseus, Aries and Pisces.
From history and mythology
This constellation was known since antiquity, butwhere exactly the name occurred, remains unknown. There are notes about him in the Babylonian catalogs and manuscripts, which are recorded about 1100 years before our era. The constellation is known since the time of the birth of astronomy and was described by the Greek Ptolemy in the second century BC. The constellation Triangle was present on the stellar maps of the Cretans and Phoenicians. Everything says that he has a long history. One of the ancient astronomers, Eratosthenes, the constellation of the Triangle resembled a resemblance to the delta of the Nile, and in Greece it was called Deltonon because of the outlines resembling the Greek capital letter "delta".
From written sources on Greek mythology it is known that the constellation of the Triangle was identified with the island of Demeter - Sicily - and its three main cities.
Let's talk about characteristic tops
Constellation The triangle forms a shape resembling a geometric figure, according to its name.
Outlined by the three most notable stars in this.constellation. The brightest space objects Alpha, Beta and Gamma form the actual shape of a triangle. The most significant space bodies in the constellation Triangle include the brightest object in its star system, the beta, called Deltotum. From Earth to this star, the distance is approximately 125 light years. The second brightest in this constellation - Alpha - according to the classification refers to the white-yellow subgiants. It is also called the vertex of the triangle, it is a double star of a complex spectrum. The distance to the star object is 64.2 light years. Gamma, the third star on the brightness of the glow, is a white dwarf, located at the distance of 188 light years from Earth. Delta has the same structure as Alpha. It consists of two dwarfs - yellow and orange. The distance between our planet and these stars is at least 35 light years.
Spiral Galaxy M33
The constellation is easily recognizable and contains in itsvisible borders, though not the brightest, but one fairly well-known spiral galaxy M33, which belongs to the type of Sc and is included in the group of local galaxies.
The largest objects of this sky area are the Andromeda galaxy, the Milky Way and the Triangle galaxy, also known as M33 or NGC598.
Эти крупнейшие спиралевидные галактики обладают their own subgroups of galaxies. Most of them are associated with "maternal" enormous gravitational forces. Triangle Galaxy honorably takes the third place (after Andromeda and the Milky Way) as part of the local group of galaxies. Its diameter is about 50-55.6 thousand light years.
Black hole detected in Triangle galaxyM33 X-7 is quite large. The mass of the cosmic body is 16 times greater than that of the Sun. This is one of the largest black holes, the only exception is supermassive holes at a sufficiently close distance from us.
The constellation Triangle also includes others.galactic systems, they are less bright, and their magnitude does not exceed the eleventh stellar. The largest of these is the spiral galaxy NGC925. The distance from our Sun to NGC925 is 46 million light years. This is far enough, but thanks to super-power telescopes, astronomers study outer space and unique objects of the Universe in this part of the sky.
