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ESO 477- G 020 | Black Holes | Apex Andromeda | Apex Andromeda

Black Holes/ESO 477- G 020

InferredSupermassive

Unified black-hole record

ESO 477- G 020

Cataloged mass estimate

Mass51.741M M☉

Distance178.081M ly

HostESO 477- G 020

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:2832
Canonical name: ESO 477- G 020
Alternate names: None reported
Black-hole type: Supermassive
Status: Inferred
Population: Catalog
Confidence: Cataloged mass estimate
Host galaxy: ESO 477- G 020

Position

Coordinates and distance

Right ascension (RA): 30.15084°
Declination (Dec): -25.05121°
Galactic longitude (l): 209.19779°
Galactic latitude (b): -74.34507°
Distance: 178.081M light-years
Distance error: Not reported by source catalogs
Redshift: 0.01329

Physical profile

Mass, spin, and system

Mass: 51.741M solar masses
Mass error, lower: 25.87M solar masses
Mass error, upper: 25.87M 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 ↗