Swift J1357.2-0933

Dynamically confirmed black hole

Also known as SWIFT J13572-093313 · Gaia DR3 3615597791550052736 · SWIFT J1357.2-0933 · CRTS CSS110208 J135717-093238 · PS1-11xl · CRTS MLS110301 J135717-093239 · Gaia DR2 3615597791550052736 · ZTF19aanxwrq · CRTS J135716.8-093238

Mass8.9 M☉

Distance7.469K ly

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/table12:11
Canonical name: Swift J1357.2-0933
Alternate names: SWIFT J13572-093313 · Gaia DR3 3615597791550052736 · SWIFT J1357.2-0933 · CRTS CSS110208 J135717-093238 · PS1-11xl · CRTS MLS110301 J135717-093239 · Gaia DR2 3615597791550052736 · ZTF19aanxwrq · CRTS J135716.8-093238
Black-hole type: Stellar-Mass Binary
Status: Confirmed
Population: Catalog
Confidence: Dynamically confirmed black hole
Host galaxy: Not reported by source catalogs

Position

Coordinates and distance

Right ascension (RA): 209.32008333°
Declination (Dec): -9.54404167°
Galactic longitude (l): 328.7019°
Galactic latitude (b): 50.0042°
Distance: 7.469K light-years
Distance error: Not reported by source catalogs
Redshift: Not reported by source catalogs

Physical profile

Mass, spin, and system

Mass: 8.9 solar masses
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: M2-4V
Orbital period: 0.11666666666666665 days
Inclination: 90°

Evidence

Detection and discovery

Detection method: Dynamical mass measurement in an X-ray binary
Discovery year: 2011
Discovery observatory: Sw
X-ray properties: WATCHDOG source type: BH,T,R,J?
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?

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