NGC 4712

NGC 4712
NGC 4712 as seen during the Sloan Digital Sky Survey (SDSS)
Observation data (J2000 epoch)
ConstellationComa Berenices
Right ascension12h 49m 33s
Declination+25° 28′ 11″
Distance~224 million ly
Apparent magnitude (B)13.5
Surface brightness22.66 mag/arcsec^2
Characteristics
TypeSAbc
Other designations
PGC 43368,

UGC 7977, MCG 4-30-21, CGCG 129-25, KUG 1247+257A,

IRAS 12471+2544

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.[1]

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

References

  1. ^ a b "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-06-06.
  2. ^ a b "NED Query Results for NGC 4712". ned.ipac.caltech.edu. Retrieved 2024-06-06.
  3. ^ "NGC 4712". spider.seds.org. Retrieved 2024-06-06.
  4. ^ "NGC_4712". simbad.u-strasbg.fr. Retrieved 2024-06-06.