Statements (24)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
variable star
binary star system microquasar |
| gptkbp:apparentMagnitude |
12.5
|
| gptkbp:blackHoleMass |
~9 solar masses
|
| gptkbp:companionStarMass |
~0.7 solar masses
|
| gptkbp:contains |
black hole
K-type star |
| gptkbp:declination |
+33° 52′ 01.9″
|
| gptkbp:discoveredBy |
1938
|
| gptkbp:distanceFromEarth |
7,800 light-years
|
| https://www.w3.org/2000/01/rdf-schema#label |
V404 Cygni
|
| gptkbp:locatedIn |
gptkb:constellation_Cygnus
|
| gptkbp:notableOutburst |
1989
2015 |
| gptkbp:orbitType |
6.5 days
|
| gptkbp:otherDesignation |
gptkb:Nova_Cygni_1938
GS 2023+338 |
| gptkbp:rightAscension |
20h 24m 03.83s
|
| gptkbp:SIMBADID |
V* V404 Cyg
|
| gptkbp:spectralType |
K0 IV
|
| gptkbp:variableType |
V* (variable star)
|
| gptkbp:bfsParent |
gptkb:Cygnus
|
| gptkbp:bfsLayer |
6
|