Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
photometric system
|
| gptkbp:alsoKnownAs |
gptkb:Johnson_system
|
| gptkbp:bandB |
blue
|
| gptkbp:bandU |
ultraviolet
|
| gptkbp:bandV |
visual
|
| gptkbp:basisFor |
many modern photometric systems
|
| gptkbp:color |
gptkb:B-V
gptkb:U-B |
| gptkbp:developedBy |
gptkb:William_Wilson_Morgan
gptkb:Harold_Lester_Johnson |
| https://www.w3.org/2000/01/rdf-schema#label |
UBV system
|
| gptkbp:introducedIn |
1953
|
| gptkbp:measures |
apparent magnitude
color index |
| gptkbp:replacedBy |
UBVRI system
|
| gptkbp:standardStar |
gptkb:Vega
|
| gptkbp:usedFor |
measuring stellar magnitudes
|
| gptkbp:usedIn |
gptkb:astronomy
|
| gptkbp:wavelengthRangeB |
~440 nm
|
| gptkbp:wavelengthRangeU |
~365 nm
|
| gptkbp:wavelengthRangeV |
~550 nm
|
| gptkbp:bfsParent |
gptkb:Johnson_photometric_system
|
| gptkbp:bfsLayer |
7
|