Statements (30)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
binary star system
|
| gptkbp:apparentMagnitude |
8.07
|
| gptkbp:component |
BY Dra A
BY Dra B |
| gptkbp:declination |
+51° 38′ 56″
|
| gptkbp:discoveredBy |
gptkb:W._J._Luyten
|
| gptkbp:discoveredIn |
1944
|
| gptkbp:distanceFromEarth |
16.5 light years
|
| https://www.w3.org/2000/01/rdf-schema#label |
BY Dra
|
| gptkbp:locatedIn |
constellation Draco
|
| gptkbp:mass |
0.697 solar masses
0.792 solar masses |
| gptkbp:metallicity |
-0.5 [Fe/H]
|
| gptkbp:notableFor |
prototype of BY Draconis variables
|
| gptkbp:orbitType |
5.98 days
|
| gptkbp:otherDesignation |
gptkb:LHS_452
gptkb:BD+51_2262 gptkb:HD_234677 gptkb:HIP_94349 gptkb:SAO_31248 Gliese 719 |
| gptkbp:parallax |
197.27 mas
|
| gptkbp:radialVelocity |
-25.8 km/s
|
| gptkbp:rightAscension |
18h 21m 03.6s
|
| gptkbp:separates |
0.07 AU
|
| gptkbp:spectralType |
M5.5V
M1.5V |
| gptkbp:variableType |
gptkb:BY_Draconis_variable
|
| gptkbp:bfsParent |
gptkb:BY_Draconis
|
| gptkbp:bfsLayer |
7
|