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NGC1023 | Black Holes | Apex Andromeda | Apex Andromeda

Black Holes/NGC1023

ConfirmedSupermassive

Unified black-hole record

NGC1023

Direct black-hole mass measurement

Also known as NGC 1023

Mass41.687M M☉

Distance35.225M ly

HostNGC1023

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:1804
Canonical name: NGC1023
Alternate names: NGC 1023
Black-hole type: Supermassive
Status: Confirmed
Population: Catalog
Confidence: Direct black-hole mass measurement
Host galaxy: NGC1023

Position

Coordinates and distance

Right ascension (RA): 40.10005°
Declination (Dec): 39.06325°
Galactic longitude (l): 145.02324°
Galactic latitude (b): -19.08918°
Distance: 35.225M light-years
Distance error: 2.609M light-years
Redshift: 0.00212

Physical profile

Mass, spin, and system

Mass: 41.687M solar masses
Mass error, lower: 4.533M solar masses
Mass error, upper: 5.087M 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: 2026-08-31T01:34:41.049Z
Source record: Open provider record ↗

Merged source records

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

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