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Missions Planets Black Holes 3D Map Agencies Blog About apexandromeda.com

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NGC0221 | Black Holes | Apex Andromeda | Apex Andromeda

Black Holes/NGC0221

ConfirmedSupermassive

Unified black-hole record

NGC0221

Direct black-hole mass measurement

Mass2.455M M☉

Distance2.609M ly

HostNGC0221

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/table2:28
Canonical name: NGC0221
Alternate names: None reported
Black-hole type: Supermassive
Status: Confirmed
Population: Catalog
Confidence: Direct black-hole mass measurement
Host galaxy: NGC0221

Position

Coordinates and distance

Right ascension (RA): 10.67427°
Declination (Dec): 40.86517°
Galactic longitude (l): Not reported by source catalogs
Galactic latitude (b): Not reported by source catalogs
Distance: 2.609M light-years
Distance error: 0 light-years
Redshift: Not reported by source catalogs

Physical profile

Mass, spin, and system

Mass: 2.455M solar masses
Mass error, lower: 869.816K solar masses
Mass error, upper: 1.347M 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 ↗

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