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IC 42 | |
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![]() IC 42 taken by DECam | |
Observation data | |
Constellation | Cetus |
Redshift | 0.054745 |
Heliocentric radial velocity | 16,412 km/s |
Distance | 749 Mly (229.6 Mpc) |
Characteristics | |
Type | SBbc |
Size | 145,000 light-years (estimated) |
Other designations | |
PGC 2463, PGC 911417, 2MASX J00410585-1525410, MCG-03-02-036, NVSS J004105-152526 |
IC 42 known as PGC 2463 and PGC 911417, is a barred spiral galaxy located in the constellation of Cetus. [1] [2] It is about 750 million light-years away from the Solar System and has an estimated diameter of 145,000 light-years, making it bigger compared to the Milky Way galaxy. [3] It was first found by Stephane Javelle, a French astronomer on August 25, 1892. [3] According to SIMBAD, it is considered as an emission-line galaxy. [4]
NGC 37 is a lenticular galaxy located in the Phoenix constellation. It is approximately 42 kiloparsecs in diameter and about 12.9 billion years old.
IC 5332, also known as PGC 71775 is an intermediate spiral galaxy about 30 million light-years away in the constellation Sculptor. IC 5332 is a delicate spiral galaxy that is unusually faint and beautifully symmetrical. As viewed from earth it is nearly face on. It has a very small central bulge and open spiral arms accounting for its classification (SABc). The galaxy lies in the direction of the galactic south pole.
LEDA 135657 is a distant low surface brightness spiral galaxy located about 570 million light-years away in the constellation Cetus. It has an estimated diameter of 97,000 light-years.
PGC 54493 is a barred spiral galaxy located about 490 million light-years away in the constellation Serpens. It is part of a galaxy group called Abell 2052. It has an estimated diameter of 140,000 light-years.
NGC 521, also occasionally referred to as PGC 5190 or UGC 962, is a barred spiral galaxy located approximately 224 million light-years from the Solar System in the constellation Cetus. It was discovered on 8 October 1785 by astronomer William Herschel.
NGC 734 is a lenticular galaxy with a central bar in the constellation Cetus, which is about 538 million light years from the Milky Way. It was discovered on November 9, 1885, by the American astronomer Francis Preserved Leavenworth.
NGC 3110, known as NGC 3122 and NGC 3518 is an active spiral galaxy in the Constellation Sextans. It contains extensive Hubble-type Sb star-forming regions, and is located south of the celestial equator. It is estimated to be 218 million light-years from the Milky Way and has a diameter of around 100,000 ly. Together with PGC 29184 it forms a gravitationally bound galaxy pair. Located in the same area of the sky is the galaxy IC 589.
IC 4271 is a spiral galaxy located some 800 million light-years away in the Canes Venatici constellation. It is 130,000 light-years in diameter. IC 4271 was first located on July 10, 1896, by Stephane Javelle, a French astronomer. It hosts a Seyfert type 2 nucleus, containing an acceleration disc around its supermassive black hole which releases large amounts of radiation, hence its bright appearance. IC 4271 appears to be interacting with its smaller neighboring galaxy, PGC 3096774.
PGC 2046648 is a large spiral galaxy located 1.2 billion light-years away in the Hercules constellation. Its diameter is estimated 260,000 light-years, meaning PGC 2046648 is much larger compared to the Milky Way galaxy.
PGC 29820 is a spiral galaxy located 600 million light-years away from the Solar System in the Sextans constellation. It is about 120,000 light-years in diameter and has high amounts of star formation rates. The reason is due to the ram pressure, which enables the dense gas to be compressed which eventually collapses to form new stars. Not only to mention, the galaxy's tendrils are also created, hence astronomers calling it a jellyfish galaxy. According to SIMBAD, it is classified as a Seyfert 2 galaxy which it contains an active nucleus.
PGC 65543, is a spiral galaxy, with extensive star forming regions, located in Indus. It is 650 million light-years away from the Solar System and approximately measuring 90,000 light-years in diameter. The tidal interactions from certain galaxies which PGC 65543 is moving towards to, have caused it to get distorted. Its star-forming gas and dust are dynamically stripped and formed into tendrils that stretch outwards, thus gives an appearance of a jellyfish galaxy.
PGC 1228197 known as WINGS J211347.41+022834.9 and JO206, is a large spiral galaxy located 700 million light-years away towards the constellation of Aquarius. The galaxy is estimated to be at least 160,000 light-years in diameter, making it somehow bigger than the Milky Way. With a radial velocity of 15,200 kilometers per second, it is slowly drifting away. It is classified as a jellyfish galaxy, mainly due to interactions from other galaxies, causing it to run into intracluster medium and stripping the gas from it, which causes long galactic tendrils of stars. It has an active galactic nucleus according to SIMBAD.
PGC 4789 is a distant barred spiral galaxy in the Pisces constellation. It is located 675 million light-years from the Milky Way and seems to be interacting with its neighboring galaxies. it is known as Arp 48 in the Atlas of Peculiar Galaxies catalogue. In this class, PGC 4789 falls into galaxies that have at least one low surface brightness companion.
UGC 934, known as PGC 5085, is a large spiral galaxy about 470 million light-years away from the solar system. It is located in the constellation of Pisces and about 285,000 thousand light-years in diameter. With its neighboring galaxy PGC 212740, they together form Arp 70, the 70th number in the Atlas of Peculiar Galaxies which was created by Halton Arp. In this class, they fall under spiral galaxies that have a small high-surface brightness companions.
IC 4461 is a spiral galaxy located in the Boötes constellation, located at distance of 417 million light-years from both the Milky Way and Andromeda Galaxy.
PGC 2456 known as KAZ 364 and JO201, is a spiral galaxy located in the constellation of Cetus. A member of Abell 85 galaxy cluster, it is located 617 million light-years away from the Solar System and is considered a jellyfish galaxy due to the fact the tendrils are seen drifting downwards from its core. This mainly occurs when such galaxies like PGC 2456, moves through high speeds across the galaxy clusters, causing ram pressure to stripped gas, thus forming tendrils full of star formation. It is listed as a Seyfert galaxy by SIMBAD, meaning it has an active galactic nucleus. PGC 2456 lies 360 kiloparsecs from the brightest cluster galaxy, Holmberg 15A.
IC 5337 or JW100, is a spiral galaxy located 800 million light-years away from the Solar System in the constellation of Pegasus. It is probably gravitationally bound to IC 5338, the brightest cluster galaxy in Abell 2626. IC 5337 is a jellyfish galaxy, mainly due to dynamic stripping pressure. Star-forming gas are thrown about, as the galaxy penetrates through the thin gas layer and causing them to drip from the galaxy's disc, giving it its unique appearance of a cosmic jellyfish. In the image, other galaxies can be seen in the background.
IC 3686 is a Sc type spiral galaxy located 920 million light-years from the Solar System in the constellation of Virgo. It was discovered by American astronomer Royal Harwood Frost on May 10, 1904. Frost described it as magnitude 14.3 and RA 12 42 at 36.0, Dec +11 44 22. IC 3686 has an estimated diameter of 270,000 light-years making it larger compared to the Milky Way. and is classified as LINER-type active galactic nucleus galaxy according to SIMBAD. Despite listed in the Virgo Cluster catalogue as VCC 1927, it is not a member of the Virgo Cluster but a background galaxy.
NGC 5008 is a massive barred spiral galaxy located in the Boötes constellation.
IC 1166 are a pair of galaxies in the Corona Borealis constellation comprising IC 1166 NED01 and IC 1166 NED02. They are located 977 million light-years from the Solar System and were discovered on July 28, 1892, by Stephane Javelle.