Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:star
|
| gptkbp:apparentMagnitude |
9.6
|
| gptkbp:catalogue |
gptkb:Bonner_Durchmusterung
|
| gptkbp:declination |
+33° 52′ 02.2″
|
| gptkbp:discoveredBy |
1989 (X-ray nova outburst)
|
| gptkbp:distanceFromEarth |
7,800 light-years
|
| gptkbp:hasCompanion |
black hole
|
| https://www.w3.org/2000/01/rdf-schema#label |
BD+36°2147
|
| gptkbp:locatedIn |
gptkb:constellation_Cygnus
|
| gptkbp:massOfCompanion |
~9 solar masses
|
| gptkbp:orbitType |
6.5 days
|
| gptkbp:otherDesignation |
gptkb:V404_Cygni
|
| gptkbp:partOf |
V404 Cygni system
|
| gptkbp:rightAscension |
20h 24m 03.83s
|
| gptkbp:spectralType |
K0IV
|
| gptkbp:variableStar |
binary star system
|
| gptkbp:bfsParent |
gptkb:Lalande_21185
|
| gptkbp:bfsLayer |
8
|