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It traces to the Greek astronomer Hipparchus (or the Alexandrian astronomer Ptolemy-references vary). He classed stellar objects on how bright they appeared - the brightest were "magnitude 1", the next brightest were "magnitude 2", on down to "magnitude 6", the faintest he could see. Thus the scale is roughly 2000 years old.
What else can I help you with?
The sun is which type of star?
The sun is a yellow dwarf star. Its color, temperature, and size classify it as such compared to other types of stars.
What are the four variables astromeners use to classify stars?
The four variables astronomers use to classify stars are temperature, luminosity, size or radius, and mass. By analyzing these properties, astronomers can determine a star's position on the Hertzsprung-Russell diagram and classify it into different spectral types and stages of stellar evolution.
What are the two main properties that astonomers use to classify stars?
The surface temperature and the absolute magnitude, which is the brightness of the star when viewed from a standard distance of 10 parsecs.
What does the spectral type of a star measures what?
The spectral type of a star measures its temperature and determines its color, luminosity, and size. It is determined by the characteristics of the star's spectrum, such as the absorption lines caused by elements in its atmosphere. Astronomers use spectral types to classify stars based on their physical properties.
What can you infer from a star's luminosity class?
A star's luminosity class provides information about its size and brightness compared to other stars of the same spectral type. It can indicate whether a star is a main sequence star, giant star, or supergiant star. Luminosity class is used in the Hertzsprung-Russell diagram to classify stars based on their evolutionary stage.
What are characteristics used to classify a star?
you classify stars by color, temperature, size, composition, and brightness.
Professions where you need to classify living things?
porn star
How would you classify a movie star as a factor of production?
Labor.
What is the diameter of the dying star?
Depends on what star and at what point you classify it as dieing. As soon as a star is born it is "dieing" as it is using up the fuel that makes it.
Are stars classified by how hot they are?
Of course, you can classify them in different ways. One important way to classify them is their mass; it is basically their mass that defines the star's evolution. But you can also classify them according to their temperature, radius, age, metallicity, etc.
What property did you use to classify a celestial body as a star?
Stars shine...they produce light. ght
What is the final explosion of a dying supergiant star called?
A supernova, or in the case of a smaller star, a nova.
What is the difference in 4 star and 3 star petrol?
The star rating is no longer used to classify petrol. The star rating was an indication of the percentage of lead present in the fuel. Commercial fuels no longer contain lead.
How would you classify the based on each of these characteristics?
The sun is considered a main sequence star on the Hertzsprung-Russell diagram.
The sun is which type of star?
The sun is a yellow dwarf star. Its color, temperature, and size classify it as such compared to other types of stars.
How do you use classify in a sentence?
you can not classify this. How can you classify them?
Is the brittle star a producer?
No, they are carnivorous and mostly eat dead matter. If anything I'd classify then as detrivores (decomposers) rather than producers.
