NGC1277

Direct black-hole mass measurement

Also known as NGC 1277 · LEDA 12434 · MCG+07-07-064 · Z 540-104 · [BM99] 274 · [CG99] SA426-11 · [CR71] 37 · 2MASX J03195148+4134242 · Z 0316.6+4123 · [CHM2007] HDC 219 J031951.48+4134242 · [CHM2007] LDC 224 J031951.48+4134242 · [MO2001b] J031951.6+413423.7 · UZC J031951.6+413425 · [MRS2020] J031951.5+413425 · [MRS2020] 701 · SDSS J031951.47+413424.8 · NGC 1277

Mass4.677B M☉

Distance231.571M ly

HostNGC1277

3D model “Blackhole” by rubykamen, licensed under CC BY 4.0.

Catalog record

Identity and classification

ID: vizier-massive:J/A+A/521/A55/bh:1978
Canonical name: NGC1277
Alternate names: NGC 1277 · LEDA 12434 · MCG+07-07-064 · Z 540-104 · [BM99] 274 · [CG99] SA426-11 · [CR71] 37 · 2MASX J03195148+4134242 · Z 0316.6+4123 · [CHM2007] HDC 219 J031951.48+4134242 · [CHM2007] LDC 224 J031951.48+4134242 · [MO2001b] J031951.6+413423.7 · UZC J031951.6+413425 · [MRS2020] J031951.5+413425 · [MRS2020] 701 · SDSS J031951.47+413424.8 · NGC 1277
Black-hole type: Supermassive
Status: Confirmed
Population: Catalog
Confidence: Direct black-hole mass measurement
Host galaxy: NGC1277

Position

Coordinates and distance

Right ascension (RA): 49.96453°
Declination (Dec): 41.57341°
Galactic longitude (l): 150.54971°
Galactic latitude (b): -13.20384°
Distance: 231.571M light-years
Distance error: 23.157M light-years
Redshift: 0.0169

Physical profile

Mass, spin, and system

Mass: 4.677B solar masses
Mass error, lower: 1.366B solar masses
Mass error, upper: 1.93B solar masses
Spin: Not reported by source catalogs
Companion: Not reported by source catalogs
Companion type: Not reported by source catalogs
Orbital period: Not reported by source catalogs
Inclination: Not reported by source catalogs

Evidence

Detection and discovery

Detection method: Stellar dynamics
Discovery year: Not reported by source catalogs
Discovery observatory: Not reported by source catalogs
X-ray properties: Not reported by source catalogs
Radio properties: Not reported by source catalogs
Gravitational-wave event: Not reported by source catalogs

Provenance

Sources and refresh state

Source catalog: VizieR J/ApJ/831/134
Source reference: 2016ApJ...831..134V
Last updated: 2026-09-12T01:40:08.085Z
Source record: Open provider record ↗

Merged source records

VizieR J/A+A/521/A552010A&A...521A..55C
VizieR J/ApJ/831/1342016ApJ...831..134V
SIMBAD black-hole object typesSIMBAD object type BH/BH?