The luminosity class of NGC 5377 is I and it has a broad HI line. NGC 5377 also has an active galactic nucleus.[1]
To date, 17 non-redshift measurements yield a distance of 25.918 ± 5.770 Mpc (∼84.5 million ly),[4] which is within the Hubble distance range. 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 5377 could be approximately 37.7 kpc (∼123,000 ly) if Hubble distance is used to calculate it.
Nucleic disk
With observations from the Hubble Space Telescope, a star-forming disk was observed around the core of NGC 5377. The size of its semi-major axis is estimated at 790 pc (~2,575 light years).[5]
Supermassive black hole
According to a study based on near-infrared K-band luminosity measurements of the nuclei of NGC 5377, a supermassive black hole with an apparent mass of approximately 107.8 𝑀⊙ (63 million solar masses) exists within the core of the galaxy.[6]
NGC 5377 is a member of the NGC 5448 Group according to A.M. Garcia. The group has nine galaxies, including NGC 5425, NGC 5448, NGC 5481, NGC 5500, NGC 5520, UGC 9056 and UGC 9083.[9]
^Comeron, S.; Knapen, J. H.; Beckman, J. E.; Laurikainen, E.; Salo, H.; Martinez-Valpuesta, I.; Buta, R. J. (November 1, 2018). "AINUR: Atlas of Images of NUclear Rings". ArXiv. Retrieved July 23, 2024.
^Clocchiatti, Alejandro; Benetti, Stefano; Wheeler, J. Craig; Wren, William; Boisseau, J.; Cappellaro, Enrico; Turatto, Massimo; Patat, Ferdinando; Swartz, Douglas A.; Harkness, Robert P.; Brotherton, Michael S.; Wills, Beverly; Hemenway, Paul; Cornell, Mark; Frueh, Marian (1996-03-01). "A Study of SN 1992H in NGC 5377". The Astronomical Journal. 111: 1286. doi:10.1086/117874. ISSN0004-6256.