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NGC3665 | Black Holes | Apex Andromeda | Apex Andromeda

Black Holes/NGC3665

ConfirmedSupermassive

Unified black-hole record

NGC3665

Direct black-hole mass measurement

Also known as NGC 3665

Mass575.44M M☉

Distance113.176M ly

HostNGC3665

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:2358
Canonical name: NGC3665
Alternate names: NGC 3665
Black-hole type: Supermassive
Status: Confirmed
Population: Catalog
Confidence: Direct black-hole mass measurement
Host galaxy: NGC3665

Position

Coordinates and distance

Right ascension (RA): 171.18179°
Declination (Dec): 38.76279°
Galactic longitude (l): 174.71237°
Galactic latitude (b): 68.49333°
Distance: 113.176M light-years
Distance error: 21.852M light-years
Redshift: 0.00683

Physical profile

Mass, spin, and system

Mass: 575.44M solar masses
Mass error, lower: 107.705M solar masses
Mass error, upper: 132.506M 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