38 Cancri (original) (raw)
38 Cancri è una stella gigante bianco-gialla di magnitudine 6,66 situata nella costellazione del Cancro. Dista 531 anni luce dal sistema solare.
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| dbo:abstract | 38 Cancri is a variable star in the zodiac constellation Cancer, located around 607 light years from the Sun. This object has the variable star designation BT Cancri; 38 Cancri is the Flamsteed designation. It is a member of the Praesepe cluster but is a challenge to view with the naked eye, having an apparent visual magnitude of 6.65. The star is moving closer to the Earth with a heliocentric radial velocity of +32 km/s. This is an evolving subgiant star with a stellar classification of F0 IV. It was found to be a pulsating variable by Michel Breger in 1970 and is classed as a Delta Scuti variable. The star displays a pattern of variation showing up to 22 different frequencies, with three being dominant. The brightness varies by up to 0.07 in magnitude. The star has a magnetic field with a computed longitudinal field strength of −215±149 G. It has 1.8 times the mass of the Sun and 1.8 times the Sun's radius. The star is radiating 59 times the Sun's luminosity from its photosphere at an effective temperature of around 7,300 K. (en) 38 Cancri è una stella gigante bianco-gialla di magnitudine 6,66 situata nella costellazione del Cancro. Dista 531 anni luce dal sistema solare. (it) 38 Cancri, som är stjärnans Flamsteed-beteckning, är en ensam stjärna, belägen i den mellersta delen av stjärnbilden Kräftan och har variabelbeteckningen BT Cancri. Den har en skenbar magnitud av ca 6,65 och kräver åtminstone en handkikare för att kunna observeras. Baserat på parallax enligt Gaia Data Release 2 på ca 5,4 mas, beräknas den befinna sig på ett avstånd på ca 607 ljusår (ca 186 parsek) från solen och ingår i den öppna stjärnhopen Praesepe (Messier 44). Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 32 km/s. (sv) 38 Рака (лат. 38 Cancri) — пульсирующая переменная звезда типа δ Щита, находящаяся в созвездии Рака. Удалена от Земли на 531 световых год и имеет видимую звёздную величину +6.66, то есть нельзя увидеть невооружённым глазом, но можно заметить в бинокль. Это горячий жёлто-белый гигант спектрального класса F. (ru) |
| dbo:thumbnail | wiki-commons:Special:FilePath/BTCncLightCurve.png?width=300 |
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| dbo:wikiPageRevisionID | 1117357535 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Cancer_(constellation) dbr:Stellar_classification dbr:Light_curve dbc:Cancer_(constellation) dbc:Delta_Scuti_variables dbc:Durchmusterung_objects dbc:F-type_subgiants dbc:Flamsteed_objects dbc:Henry_Draper_Catalogue_objects dbc:Hipparcos_objects dbc:Objects_with_variable_star_designations dbr:Constellation dbr:Photosphere dbr:Effective_temperature dbr:Frequency dbr:Light_year dbr:Stellar_evolution dbr:Delta_Scuti_variable dbr:Zodiac dbr:Apparent_visual_magnitude dbr:Radial_velocity dbr:Stellar_magnetic_field dbr:Variable_star dbr:Flamsteed_designation dbr:Photometric_system dbr:Variable_star_designation dbr:Mass_of_the_Sun dbr:Subgiant_star dbr:Sun's_luminosity dbr:Sun's_radius dbr:Praesepe_cluster dbr:File:BTCncLightCurve.png |
| dbp:absmagV | 0.360000 (xsd:double) |
| dbp:appmagV | 6.650000 (xsd:double) |
| dbp:class | F0 IV (en) |
| dbp:constell | dbr:Cancer_(constellation) |
| dbp:epoch | J2000.0 (en) |
| dbp:luminosity | 59.310000 (xsd:double) |
| dbp:mass | 1.786000 (xsd:double) |
| dbp:pError | 0.070500 (xsd:double) |
| dbp:parallax | 5.370000 (xsd:double) |
| dbp:propMoDec | −13.103 (en) |
| dbp:propMoRa | −36.879 (en) |
| dbp:radius | 1.834000 (xsd:double) |
| dbp:rotation | 57888.0 |
| dbp:rotationalVelocity | 138.500000 (xsd:double) |
| dbp:type | subgiant (en) |
| dbp:variable | dbr:Delta_Scuti_variable |
| dbp:wikiPageUsesTemplate | dbt:Reflist dbt:Short_description dbt:Starbox_astrometry dbt:Starbox_begin dbt:Starbox_catalog dbt:Starbox_character dbt:Starbox_detail dbt:Starbox_end dbt:Starbox_image dbt:Starbox_observe dbt:Starbox_reference dbt:Stars_of_Cancer dbt:Val dbt:DEC dbt:Odlist dbt:RA |
| dcterms:subject | dbc:Cancer_(constellation) dbc:Delta_Scuti_variables dbc:Durchmusterung_objects dbc:F-type_subgiants dbc:Flamsteed_objects dbc:Henry_Draper_Catalogue_objects dbc:Hipparcos_objects dbc:Objects_with_variable_star_designations |
| gold:hypernym | dbr:Star |
| rdf:type | owl:Thing dbo:Place dbo:Location schema:Place dbo:CelestialBody yago:WikicatObjectsNamedWithVariableStarDesignations yago:Animal100015388 yago:CelestialBody109239740 yago:Giant101323781 yago:LivingThing100004258 yago:NaturalObject100019128 yago:Object100002684 yago:Organism100004475 yago:PhysicalEntity100001930 dbo:Star yago:Star109444100 yago:Thing100002452 yago:Variable109468959 yago:Whole100003553 yago:WikicatDeltaScutiVariables yago:WikicatF-typeGiants yago:WikicatF-typeStars yago:WikicatFlamsteedObjects |
| rdfs:comment | 38 Cancri è una stella gigante bianco-gialla di magnitudine 6,66 situata nella costellazione del Cancro. Dista 531 anni luce dal sistema solare. (it) 38 Cancri, som är stjärnans Flamsteed-beteckning, är en ensam stjärna, belägen i den mellersta delen av stjärnbilden Kräftan och har variabelbeteckningen BT Cancri. Den har en skenbar magnitud av ca 6,65 och kräver åtminstone en handkikare för att kunna observeras. Baserat på parallax enligt Gaia Data Release 2 på ca 5,4 mas, beräknas den befinna sig på ett avstånd på ca 607 ljusår (ca 186 parsek) från solen och ingår i den öppna stjärnhopen Praesepe (Messier 44). Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 32 km/s. (sv) 38 Рака (лат. 38 Cancri) — пульсирующая переменная звезда типа δ Щита, находящаяся в созвездии Рака. Удалена от Земли на 531 световых год и имеет видимую звёздную величину +6.66, то есть нельзя увидеть невооружённым глазом, но можно заметить в бинокль. Это горячий жёлто-белый гигант спектрального класса F. (ru) 38 Cancri is a variable star in the zodiac constellation Cancer, located around 607 light years from the Sun. This object has the variable star designation BT Cancri; 38 Cancri is the Flamsteed designation. It is a member of the Praesepe cluster but is a challenge to view with the naked eye, having an apparent visual magnitude of 6.65. The star is moving closer to the Earth with a heliocentric radial velocity of +32 km/s. (en) |
| rdfs:label | 38 Cancri (en) 38 Cancri (it) 38 Рака (ru) 38 Cancri (sv) |
| owl:sameAs | freebase:38 Cancri yago-res:38 Cancri wikidata:38 Cancri dbpedia-it:38 Cancri dbpedia-ru:38 Cancri dbpedia-sv:38 Cancri https://global.dbpedia.org/id/3KHFm |
| prov:wasDerivedFrom | wikipedia-en:38_Cancri?oldid=1117357535&ns=0 |
| foaf:depiction | wiki-commons:Special:FilePath/BTCncLightCurve.png |
| foaf:isPrimaryTopicOf | wikipedia-en:38_Cancri |
| foaf:name | 38 Cancri (en) |
| is dbo:wikiPageRedirects of | dbr:BT_Cancri |
| is dbo:wikiPageWikiLink of | dbr:Table_of_stars_with_Flamsteed_designations dbr:List_of_stars_in_Cancer dbr:BT_Cancri |
| is foaf:primaryTopic of | wikipedia-en:38_Cancri |
