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2MASX J21204248+4423590 | Black Holes | Apex Andromeda | Apex Andromeda

Black Holes/2MASX J21204248+4423590

InferredSupermassive

Unified black-hole record

2MASX J21204248+4423590

Cataloged mass estimate

Mass420.539M M☉

Distance173.841M ly

Host2MASX J21204248+4423590

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:814
Canonical name: 2MASX J21204248+4423590
Alternate names: None reported
Black-hole type: Supermassive
Status: Inferred
Population: Catalog
Confidence: Cataloged mass estimate
Host galaxy: 2MASX J21204248+4423590

Position

Coordinates and distance

Right ascension (RA): 320.1769°
Declination (Dec): 44.39979°
Galactic longitude (l): 88.21842°
Galactic latitude (b): -3.81025°
Distance: 173.841M light-years
Distance error: Not reported by source catalogs
Redshift: 0.01299

Physical profile

Mass, spin, and system

Mass: 420.539M solar masses
Mass error, lower: 210.269M solar masses
Mass error, upper: 210.269M 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: Galaxy luminosity-based black-hole mass estimate
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/A+A/521/A55
Source reference: 2010A&A...521A..55C
Last updated: 2026-08-31T01:34:41.049Z
Source record: Open provider record ↗