4U 1630-472

Strong black-hole candidate

Also known as Nor X-1 · SRGA J163401.3-472339 · [KRL2007b] 192 · 1A 1630-47 · 1M 1630-472 · 1RXS J163403.0-472344 · 2U 1630-47 · 3A 1630-472 · 3U 1630-47 · 4U 1630-47 · GPS 1630-473 · GX 337+00 · INTEGRAL1 27 · INTREF 704 · [BM83] X1630-472 · SWIFT J1633.8-4724A · X Nor X-1

MassNot reported by source catalogs

DistanceNot reported by source catalogs

HostNot reported by source catalogs

3D model “Blackhole” by rubykamen, licensed under CC BY 4.0.

Catalog record

Identity and classification

ID: vizier-blackcat:J/ApJS/222/15/table12:18
Canonical name: 4U 1630-472
Alternate names: Nor X-1 · SRGA J163401.3-472339 · [KRL2007b] 192 · 1A 1630-47 · 1M 1630-472 · 1RXS J163403.0-472344 · 2U 1630-47 · 3A 1630-472 · 3U 1630-47 · 4U 1630-47 · GPS 1630-473 · GX 337+00 · INTEGRAL1 27 · INTREF 704 · [BM83] X1630-472 · SWIFT J1633.8-4724A · X Nor X-1
Black-hole type: Stellar-Mass Binary
Status: Strong Candidate
Population: Catalog
Confidence: Strong black-hole candidate
Host galaxy: Not reported by source catalogs

Position

Coordinates and distance

Right ascension (RA): 248.50670833°
Declination (Dec): -47.393°
Galactic longitude (l): 336.9112°
Galactic latitude (b): 0.2503°
Distance: Not reported by source catalogs
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: (Nor X-1)
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: 1969
Discovery observatory: U,V
X-ray properties: WATCHDOG source type: BHC,T,R,J,W
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: 2026-09-11T22:32:44.775Z
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?