Statements (121)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:main-sequence_star
gptkb:star |
| gptkbp:age |
gptkb:Sirius_B
approximately 200-300 million years 200-300 million years |
| gptkbp:apparent_magnitude |
-1.46
|
| gptkbp:average_temperature |
9940 K
approximately 9940 K about 9940 K |
| gptkbp:color |
gptkb:white
|
| gptkbp:components |
gptkb:Sirius
gptkb:Sirius_star_system |
| gptkbp:constellation |
gptkb:Canis_Major
|
| gptkbp:contains_star |
gptkb:true
A-type star |
| gptkbp:coordinates |
l=240.0, b=-5.0
|
| gptkbp:cultural_significance |
gptkb:various_cultures
|
| gptkbp:discovered_by |
gptkb:Ancient_Egypt
1839 ancient civilizations the 19th century unknown ancient astronomers |
| gptkbp:distance |
2.6 parsecs
|
| gptkbp:distance_from_earth |
8.6 light years
|
| gptkbp:distance_measurement_method |
parallax
|
| gptkbp:exhibition |
gptkb:Ptolemy
|
| gptkbp:has_color |
gptkb:white
0.0 -0.03 |
| gptkbp:has_companion |
gptkb:Sirius_B
|
| gptkbp:has_connection_to |
the binary system Sirius
|
| gptkbp:has_luminosity |
25.4 solar luminosities
25.4 times that of the Sun about 25 times that of the Sun |
| gptkbp:has_mechanic |
-0.39, -0.12 arcseconds/year
|
| gptkbp:has_radius |
1.71 solar radii
about 1.7 solar radii |
| gptkbp:has_spectral_type |
A1 V
|
| gptkbp:historical_significance |
known since antiquity
|
| https://www.w3.org/2000/01/rdf-schema#label |
Sirius A
|
| gptkbp:is_a |
gptkb:main-sequence_star
spectral type A1 V |
| gptkbp:is_a_reference_for |
celestial navigation
|
| gptkbp:is_a_subject_of |
astrophysical research papers
|
| gptkbp:is_acommon_target_for |
amateur astronomers
|
| gptkbp:is_approximately |
8.6 light years away from Earth
|
| gptkbp:is_associated_with |
gptkb:Greek_mythology
gptkb:the_Dog_Star various mythologies various myths and legends the heliacal rising phenomenon |
| gptkbp:is_cited_in |
literature and poetry
|
| gptkbp:is_considered |
a main-sequence star
|
| gptkbp:is_followed_by |
gptkb:Sirius_B
|
| gptkbp:is_involved_in |
stellar evolution studies
|
| gptkbp:is_known_for |
its brightness
its historical significance in astronomy its brightness and proximity |
| gptkbp:is_known_to |
a strong magnetic field
a high proper motion |
| gptkbp:is_located_in |
Canis Major constellation
constellation Canis Major |
| gptkbp:is_observed_in |
various cultures throughout history
|
| gptkbp:is_often_described_as |
gptkb:Alpha_Canis_Majoris
gptkb:the_Dog_Star |
| gptkbp:is_often_discussed_in |
cultural references and folklore
|
| gptkbp:is_often_featured_in |
astronomy textbooks
|
| gptkbp:is_often_used_in |
gptkb:navigation
astrophysics research a reference star for calibration |
| gptkbp:is_one_of |
the brightest stars in the night sky
the closest stars to Earth the most studied stars |
| gptkbp:is_part_of |
gptkb:Sirius_star_system
gptkb:the_Milky_Way_galaxy gptkb:star the celestial sphere the Local Bubble the galactic disk the constellation's asterism the local stellar neighborhood binary star system with Sirius B the Winter Triangle the binary system Sirius |
| gptkbp:is_studied_in |
gptkb:astronomy
its binary nature |
| gptkbp:is_used_in |
gptkb:navigation
navigation by sailors |
| gptkbp:is_visible_from |
gptkb:true
visible to the naked eye both hemispheres the naked eye winter months in the Northern Hemisphere the Southern Hemisphere's summer sky |
| gptkbp:known_as |
gptkb:the_Dog_Star
|
| gptkbp:lighting |
gptkb:Sirius_B
gptkb:none -1.46 -1.46 magnitude most stars most stars in the night sky |
| gptkbp:mass |
2.1 solar masses
about 2.1 solar masses 2.02 solar masses |
| gptkbp:metallicity |
solar metallicity
|
| gptkbp:named_after |
the Greek word for 'glowing'
|
| gptkbp:navigation_system |
gptkb:true
|
| gptkbp:orbital_period |
50.1 years
about 50.1 years with Sirius B |
| gptkbp:rotation_period |
5.4 days
|
| gptkbp:size |
gptkb:Sirius_B
|
| gptkbp:system |
gptkb:star
|
| gptkbp:system_mass |
3.1 solar masses
|
| gptkbp:type |
gptkb:main-sequence_star
|
| gptkbp:type_of |
gptkb:main-sequence_star
|
| gptkbp:was_akey_figure_in |
astrological practices
the Sirius system the navigation of ancient mariners |
| gptkbp:was_known_to_ancient_cultures |
gptkb:true
|
| gptkbp:bfsParent |
gptkb:Sirius
|
| gptkbp:bfsLayer |
4
|