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NGC7331 | Black Holes | Apex Andromeda | Apex Andromeda

Black Holes/NGC7331

ConfirmedSupermassive

Unified black-hole record

NGC7331

Direct black-hole mass measurement

Also known as NGC 7331

Mass104.713M M☉

Distance39.791M ly

HostNGC7331

Drag to orbitScroll to zoomEmbedded animation playing

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:934
Canonical name: NGC7331
Alternate names: NGC 7331
Black-hole type: Supermassive
Status: Confirmed
Population: Catalog
Confidence: Direct black-hole mass measurement
Host galaxy: NGC7331

Position

Coordinates and distance

Right ascension (RA): 339.26709°
Declination (Dec): 34.41592°
Galactic longitude (l): 93.72194°
Galactic latitude (b): -20.7241°
Distance: 39.791M light-years
Distance error: 3.914M light-years
Redshift: 0.00272

Physical profile

Mass, spin, and system

Mass: 104.713M solar masses
Mass error, lower: 35.53M solar masses
Mass error, upper: 53.776M 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: Gas 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: 2026-08-31T01:34:41.049Z
Source record: Open provider record ↗

Merged source records

VizieR J/A+A/521/A552010A&A...521A..55C
VizieR J/ApJ/831/1342016ApJ...831..134V