NGC 4712 explained

NGC 4712
Epoch:J2000
Constellation Name:Coma Berenices
Ra:12h 49m 33s
Dec:+25° 28 11
Sbrightness:22.66 mag/arcsec^2
Type:SAbc
Names:PGC 43368,UGC 7977,MCG 4-30-21,CGCG 129-25,KUG 1247+257A,IRAS 12471+2544
Appmag B:13.5
Dist Ly:~224 million ly

NGC 4712 is a spiral galaxy located in the constellation Coma Berenices. Its speed relative to the cosmic microwave background is 4,664 ± 20 km/s, which corresponds to a Hubble distance of 68.8 ± 4.8 Mpc (~224 million ly).[1] NGC 4712 was discovered by German-British astronomer John Herschel in 1832.

The luminosity class of NGC 4712 is II-III and it has a broad HI line. It also contains regions of ionized hydrogen.

To date, around ten measurements not based on redshift give a distance of 63.640 ± 16.932 Mpc (~208 million ly),[2] which is within the distance values of Hubble. Note, however, that it is with the average value of independent measurements, when they exist, that the NASA/IPAC database calculates the diameter of a galaxy and that consequently the diameter of NGC 4712 could be approximately 51 .4 kpc (~168,000 ly)[2] if we used the Hubble distance to calculate it.[3]

According to Vaucouleur and Harold Corwin, NGC 4712 and NGC 4725 form a pair of galaxies. However, like several others mentioned in this article, these two galaxies are not an actual pair, because NGC 4725's radial velocity is 1,209 ± 1 km/s and is therefore much closer to the Milky Way. It is therefore an optical pair.[4]

See also

External links

References

  1. Web site: By Name NASA/IPAC Extragalactic Database . 2024-06-06 . ned.ipac.caltech.edu.
  2. Web site: NED Query Results for NGC 4712 . 2024-06-06 . ned.ipac.caltech.edu.
  3. Web site: NGC 4712 . 2024-06-06 . spider.seds.org.
  4. Web site: NGC_4712 . 2024-06-06 . simbad.u-strasbg.fr.