Statements (106)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:star
|
| gptkbp:age |
approximately 200 million years
approximately 3 million years |
| gptkbp:apparent_magnitude |
2.24
2.25 |
| gptkbp:atmosphere |
gptkb:Northern_Hemisphere
|
| gptkbp:average_temperature |
approximately 12,000 K
approximately 15,000 K |
| gptkbp:contains_star |
gptkb:true
Beta Persei B Beta Persei C |
| gptkbp:cultural_references |
in literature and art
featured in various mythologies |
| gptkbp:cultural_significance |
various mythologies
|
| gptkbp:discovered_by |
gptkb:unknown
|
| gptkbp:discovery_year |
known since antiquity
about 1669 |
| gptkbp:distance |
93 light years
|
| gptkbp:distance_from_earth |
approximately 60 parsecs
|
| gptkbp:has_bayer_designation |
gptkb:Beta_Persei
|
| gptkbp:has_brightness_variation |
due to eclipses
0.3 magnitudes |
| gptkbp:has_color |
-0.25
-0.15 -0.14 |
| gptkbp:has_historical_significance |
known since ancient times
used in navigation used in navigation and timekeeping |
| gptkbp:has_luminosity |
about 100 times that of the Sun
approximately 100 times that of the Sun approximately 1,500 times that of the Sun |
| gptkbp:has_magnitude_change |
0.1 to 0.3
|
| gptkbp:has_magnitude_range |
2.3 to 3.4
2.2 to 3.4 |
| gptkbp:has_mechanic |
-0.12 arcseconds/year
-0.10 arcseconds/year |
| gptkbp:has_proper_name |
gptkb:Algol
|
| gptkbp:has_radius |
about 3.5 times that of the Sun
approximately 4.5 times that of the Sun approximately 6.5 times that of the Sun |
| gptkbp:has_spectral_type |
gptkb:B5_III
B3 III B8 V |
| gptkbp:has_title |
gptkb:Algol
|
| gptkbp:has_variations |
Eclipsing binary
Beta Lyrae type eclipsing binary |
| https://www.w3.org/2000/01/rdf-schema#label |
Beta Persei
|
| gptkbp:included |
star catalogs
|
| gptkbp:is_a |
gptkb:main-sequence_star
gptkb:star spectroscopic binary astrophysical object blue giant star eclipsing binary star system |
| gptkbp:is_approximately |
196 light years away from Earth
|
| gptkbp:is_associated_with |
mythology and folklore
various scientific studies the Perseus mythological hero Perseus mythological hero |
| gptkbp:is_considered_as |
a benchmark for binary stars
|
| gptkbp:is_known_for |
being a variable star
its periodic dimming |
| gptkbp:is_located_at |
Declination +40° 57′ 21″
approximately 196 light-years from Earth Declination +40° 57' 21" Right Ascension 3h 8m 10s |
| gptkbp:is_located_in |
gptkb:Milky_Way_galaxy
constellation Perseus |
| gptkbp:is_monitored_by |
amateur astronomers
|
| gptkbp:is_notable_for |
its historical observations
|
| gptkbp:is_noted_for |
its eclipsing nature
|
| gptkbp:is_observed_in |
professional astronomers
various astronomical studies |
| gptkbp:is_part_of |
gptkb:Perseus_constellation
gptkb:Milky_Way_Galaxy gptkb:Milky_Way_galaxy constellation Perseus the celestial sphere the Milky Way's stellar population the Milky Way's Perseus Arm the Perseus constellation family the Algol paradox the Algol system the Algol variable star family the Algol variable star group |
| gptkbp:is_referenced_in |
astronomical databases
|
| gptkbp:is_studied_for |
stellar evolution
|
| gptkbp:is_used_in |
stellar classification systems
navigation and astronomy stellar classification studies |
| gptkbp:is_visible_from |
gptkb:true
the northern hemisphere autumn and winter months |
| gptkbp:known_as |
Demon Star
|
| gptkbp:mass |
approximately 3.7 times that of the Sun
about 3.7 times that of the Sun |
| gptkbp:orbital_period |
2.867 days
|
| gptkbp:origin |
from Arabic 'al-ghul' meaning 'the ghoul'
|
| gptkbp:previous_name |
gptkb:Algol
|
| gptkbp:title |
Beta Algol
|
| gptkbp:type_of |
eclipsing binary star
|
| gptkbp:was_affecting |
the brightness of nearby stars
|
| gptkbp:bfsParent |
gptkb:Algol
gptkb:Perseus |
| gptkbp:bfsLayer |
5
|