Statements (28)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
astronomical index
|
| gptkbp:affects |
space weather
geomagnetic activity |
| gptkbp:alsoKnownAs |
gptkb:Wolf_number
gptkb:Zurich_number |
| gptkbp:calculationMethod |
R = k (10g + s)
|
| gptkbp:hasDataSeries |
International Sunspot Number
|
| gptkbp:hasUnit |
dimensionless
|
| https://www.w3.org/2000/01/rdf-schema#label |
sunspot number
|
| gptkbp:introduced |
gptkb:Rudolf_Wolf
|
| gptkbp:introducedIn |
1848
|
| gptkbp:location |
R is sunspot number
g is number of sunspot groups k is observer correction factor s is number of individual sunspots |
| gptkbp:maintainedBy |
World Data Center SILSO
|
| gptkbp:measures |
number of sunspots and sunspot groups on the Sun
|
| gptkbp:publishedBy |
gptkb:Royal_Observatory_of_Belgium
|
| gptkbp:recordedSince |
17th century
|
| gptkbp:relatedTo |
solar activity
solar cycle solar irradiance group sunspot number |
| gptkbp:usedFor |
studying long-term solar variability
|
| gptkbp:usedIn |
solar physics
space weather studies |
| gptkbp:bfsParent |
gptkb:Wolf_number
|
| gptkbp:bfsLayer |
6
|