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Statements

Subject Item
dbr:87_Leonis
rdf:type
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rdfs:label
87 Leonis 87 Leonis 87 Leonis 87 Leonis 獅子座87
rdfs:comment
87 Leonis (87 Leo o FN Leonis) è una stella gigante arancione di classe spettrale K4 III situata nella costellazione del Leone. È visibile a occhio nudo, con una magnitudine apparente di circa 4,771, e dista circa 600 anni luce dalla Terra. 獅子座87，又名BD-02 3360，HD 99998、SAO 138238、HR 4432，是獅子座的一颗恒星，视星等为4.77，位于銀經266.78，銀緯54.07，其B1900.0坐标为赤經11h 25m 12.3s，赤緯-2° 54.07′ 6″。 87 Leonis is a single star in the zodiac constellation of Leo, located approximately 480 light years away from the Sun. It has the Bayer designation e Leonis; 87 Leonis is the Flamsteed designation. This object is visible by the naked eye as a faint orange-hued star with an apparent visual magnitude of 4.77. It is moving away from the Earth with a heliocentric radial velocity of 19 km/s. The star is positioned near the ecliptic and thus is subject to occultation by the Moon. 87 Leonis (87 Leo, e Leo, e Leonis) é uma estrela na constelação de Leo. Tem uma magnitude aparente de 4,771, sendo visível a olho nu. Com base em sua paralaxe, está a aproximadamente 600 anos-luz (190 parsecs) da Terra, com uma margem de erro de 30 anos-luz. É uma estrela luminosa, com uma magnitude absoluta de -1,57. 87 Leonis, som är stjärnans Flamsteed-beteckning, är en ensam stjärna, belägen i den södra delen av stjärnbilden Lejonet och har även Bayer-beteckningen e Leonis. Den har en skenbar magnitud av ca 4,77 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 6,7 mas, beräknas den befinna sig på ett avstånd på ca 480 ljusår (ca 149 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 19 km/s. Stjärnans position nära ekliptikan innebär att den är föremål för ockultationer med månen.
foaf:name
87 Leonis
dcterms:subject
dbc:Bright_Star_Catalogue_objects dbc:Henry_Draper_Catalogue_objects dbc:Durchmusterung_objects dbc:Hipparcos_objects dbc:Leo_(constellation) dbc:Flamsteed_objects dbc:Bayer_objects dbc:K-type_giants
dbo:wikiPageID
27105971
dbo:wikiPageRevisionID
1079516735
dbo:wikiPageWikiLink
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owl:sameAs
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dbt:Starbox_observe dbt:Starbox_detail dbt:Starbox_end dbt:Starbox_character dbt:Starbox_begin dbt:Starbox_catalog dbt:Starbox_astrometry dbt:DEC dbt:Val dbt:Odlist dbt:Reflist dbt:Short_description dbt:Stars_of_Leo dbt:! dbt:Starbox_reference dbt:RA dbt:About-distinguish
dbp:absmagV
−1.56
dbp:appmagV
4.77
dbp:bV
+1.54
dbp:class
K3+ III Fe−0.5
dbp:constell
dbr:Leo_(constellation)
dbp:epoch
dbr:J2000.0
dbp:equinox
J2000.0
dbp:luminosity
641
dbp:pError
0.2901
dbp:parallax
6.7249
dbp:propMoDec
−17.944
dbp:propMoRa
20.901
dbp:rI
+0.84
dbp:radius
54
dbp:rotationalVelocity
≤ 19
dbo:abstract
87 Leonis is a single star in the zodiac constellation of Leo, located approximately 480 light years away from the Sun. It has the Bayer designation e Leonis; 87 Leonis is the Flamsteed designation. This object is visible by the naked eye as a faint orange-hued star with an apparent visual magnitude of 4.77. It is moving away from the Earth with a heliocentric radial velocity of 19 km/s. The star is positioned near the ecliptic and thus is subject to occultation by the Moon. This is an aging K-type giant star with a stellar classification of K3+ III Fe−0.5, which means it has exhausted the hydrogen at its core and evolved away from the main sequence. The suffix notation indicates a mild underabundance of iron in the atmosphere. It has expanded to 37 times the Sun's radius and is radiating over a thousand times the Sun's luminosity from its photosphere at an effective temperature of 4,001 K. 87 Leonis, som är stjärnans Flamsteed-beteckning, är en ensam stjärna, belägen i den södra delen av stjärnbilden Lejonet och har även Bayer-beteckningen e Leonis. Den har en skenbar magnitud av ca 4,77 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 6,7 mas, beräknas den befinna sig på ett avstånd på ca 480 ljusår (ca 149 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 19 km/s. Stjärnans position nära ekliptikan innebär att den är föremål för ockultationer med månen. 87 Leonis (87 Leo o FN Leonis) è una stella gigante arancione di classe spettrale K4 III situata nella costellazione del Leone. È visibile a occhio nudo, con una magnitudine apparente di circa 4,771, e dista circa 600 anni luce dalla Terra. 獅子座87，又名BD-02 3360，HD 99998、SAO 138238、HR 4432，是獅子座的一颗恒星，视星等为4.77，位于銀經266.78，銀緯54.07，其B1900.0坐标为赤經11h 25m 12.3s，赤緯-2° 54.07′ 6″。 87 Leonis (87 Leo, e Leo, e Leonis) é uma estrela na constelação de Leo. Tem uma magnitude aparente de 4,771, sendo visível a olho nu. Com base em sua paralaxe, está a aproximadamente 600 anos-luz (190 parsecs) da Terra, com uma margem de erro de 30 anos-luz. É uma estrela luminosa, com uma magnitude absoluta de -1,57. 87 Leonis é uma estrela gigante evoluída com uma classificação estelar de K3.5 III. Seu raio, determinado a partir de medições de seu diâmetro angular, é de 37 raios solares. Irradia energia a uma temperatura efetiva de 3 991 K, o que lhe dá a coloração alaranjada típica de estrelas de classe K.
gold:hypernym
dbr:Star
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6217
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