What kind of galaxy is NGC 7331?
spiral galaxy
NGC 7331, also known as Caldwell 30, is an unbarred spiral galaxy about 40 million light-years (12 Mpc) away in the constellation Pegasus….
| NGC 7331 | |
|---|---|
| Distance | 39.8 ± 3.3 Mly (12.2 ± 1.0 Mpc) 40 ± 3 e6ly (12.2 ± 1.0 Mpc) |
| Apparent magnitude (V) | 10.4 |
| Characteristics | |
| Type | SA(s)b |
How far away is NGC 7331?
39.79 million light yearsNGC 7331 / Distance to Earth
How many NGC galaxies are there?
7,840 objects
The New General Catalogue of Nebulae and Clusters of Stars (abbreviated NGC) is an astronomical catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, including galaxies, star clusters and emission nebulae.
Which telescope measured the size of this galaxy?
Hubble Space Telescope Measures Precise Distance to the Most Remote Galaxy Yet.
What does M stand for in astronomy?
Absolute magnitude
M(object) – Absolute magnitude, for galaxies and stars. H(object) – Absolute magnitude, for planets and nonstellar objects.
Why are galaxies named NGC?
The NGC catalog is short for New General Catalogue, and it’s a list of 7,840 interesting objects in the night sky.
How can the diameter of the universe exceed its age?
When the universe first “popped” into existence approximately 13.75 billion years ago, spacetime itself began expanding at speeds faster than the speed of light. This period, called inflation, is integral in explaining much more than the universe’s size.
What is CZ in astronomy?
cz – apparent radial velocity. z – Redshift. μ – proper motion. π – parallax.
Why are galaxies called Messier?
Galaxies usually have several names. That’s because there are several catalogs that maintain the names. For example, there’s the Messier catalog of objects. This was a list of 110 fuzzy objects that Charles Messier maintained that could be confused with comets.
What does the M stand for in galaxies?
Messier objects
The Index Catalogue (IC) lists an additional 5,286 galaxies, nebulae, and star clusters discovered between 1888 and 1907. Names with the letter M are Messier objects, named after Charles Messier, a French astronomer.