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EXO 1846-031 | Black Holes | Apex Andromeda | Apex Andromeda

Black Holes/EXO 1846-031

CandidateStellar-Mass Binary

Unified black-hole record

EXO 1846-031

Black-hole candidate

Also known as INTREF 939

MassNot reported by source catalogs

Distance22.831K ly

HostNot reported by source catalogs

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-blackcat:J/ApJS/222/15/table12:62
Canonical name: EXO 1846-031
Alternate names: INTREF 939
Black-hole type: Stellar-Mass Binary
Status: Candidate
Population: Catalog
Confidence: Black-hole candidate
Host galaxy: Not reported by source catalogs

Position

Coordinates and distance

Right ascension (RA): 282.3205°
Declination (Dec): -3.06520556°
Galactic longitude (l): 29.9585°
Galactic latitude (b): -0.9177°
Distance: 22.831K light-years
Distance error: Not reported by source catalogs
Redshift: Not reported by source catalogs

Physical profile

Mass, spin, and system

Mass: Not reported by source catalogs
Mass error, lower: Not reported by source catalogs
Mass error, upper: Not reported by source catalogs
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: X-ray binary classification
Discovery year: 1985
Discovery observatory: EX
X-ray properties: WATCHDOG source type: BHC,T
Radio properties: Not reported by source catalogs
Gravitational-wave event: Not reported by source catalogs

Provenance

Sources and refresh state

Source catalog: VizieR J/ApJS/222/15 (WATCHDOG/BlackCAT)
Source reference: 2016ApJS..222...15T
Last updated: 2026-09-12T03:20:07.578Z
Source record: Open provider record ↗

Merged source records

VizieR J/ApJS/222/15 (WATCHDOG/BlackCAT)2016ApJS..222...15T
SIMBAD black-hole object typesSIMBAD object type BH/BH?