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NGC3021 | Black Holes | Apex Andromeda | Apex Andromeda

Black Holes/NGC3021

ConfirmedSupermassive

Unified black-hole record

NGC3021

Direct black-hole mass measurement

Mass18.197M M☉

Distance73.059M ly

HostNGC3021

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-direct:J/ApJ/831/134/table2:80
Canonical name: NGC3021
Alternate names: None reported
Black-hole type: Supermassive
Status: Confirmed
Population: Catalog
Confidence: Direct black-hole mass measurement
Host galaxy: NGC3021

Position

Coordinates and distance

Right ascension (RA): 147.73797°
Declination (Dec): 33.55347°
Galactic longitude (l): Not reported by source catalogs
Galactic latitude (b): Not reported by source catalogs
Distance: 73.059M light-years
Distance error: 7.175M light-years
Redshift: Not reported by source catalogs

Physical profile

Mass, spin, and system

Mass: 18.197M solar masses
Mass error, lower: 18.197M solar masses
Mass error, upper: 18.111M 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 ↗