| dbo:abstract |
28 Monocerotis is a single star in the equatorial constellation of Monoceros. It has an orange-hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.69. The distance to this star is approximately 450 light years based on parallax, and it has an absolute magnitude of −1.00. The star is drifting further away from the Sun with a radial velocity of +26.7 km/s. This is an aging giant star with a stellar classification of K4III, having exhausted the supply of hydrogen at its core then cooled and expanded off the main sequence. The spectrum of the star shows abnormally strong lines of CN. It is classified as an FK Comae Berenices variable, varying by 0.02 magnitude over a period of 0.21 days. FK Comae Berenices variables are typically rapidly-rotating stars, but the measured projected rotational velocity of 28 Monocerotis is low. The star has expanded to 48 times the radius of the Sun. It is radiating 524 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 3,999 K. Measurement of the star's proper motion anomaly by the Gaia spacecraft suggests a companion may be orbiting the star at a distance of 1.9 AU. (en) 28 Monocerotis è una stella gigante arancione di magnitudine 4,69 situata nella costellazione dell'Unicorno. Dista 473 anni luce dal sistema solare. (it) 28 Monocerotis, som är stjärnans Flamsteed-beteckning, är en ensam stjärna belägen i den mellersta delen av stjärnbilden Enhörningen, som också har variabelbeteckningen V645 Monocerotis. Den har en genomsnittlig skenbar magnitud på ca 4,69 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 7,3 mas, beräknas den befinna sig på ett avstånd på ca 450 ljusår (ca 138 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet av ca 27 km/s. (sv) 南河增九（麒麟座28），又名BD-00 1882，HD 65953、SAO 135380、HR 3141，是麒麟座的一颗恒星，视星等为4.68，位于銀經222.35，銀緯14.81，其B1900.0坐标为赤經7h 56m 8s，赤緯-1° 14.81′ 54″。 (zh) |
| dbo:thumbnail |
wiki-commons:Special:FilePath/V645MonLightCurve.png?width=300 |
| dbo:wikiPageID |
37866217 (xsd:integer) |
| dbo:wikiPageLength |
8469 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID |
1100331974 (xsd:integer) |
| dbo:wikiPageWikiLink |
dbr:Stellar_classification dbr:Light_curve dbr:Proper_motion dbc:Bright_Star_Catalogue_objects dbc:Durchmusterung_objects dbc:Flamsteed_objects dbc:Henry_Draper_Catalogue_objects dbc:Hipparcos_objects dbc:K-type_giants dbc:Monoceros_(constellation) dbc:Objects_with_variable_star_designations dbr:Constellation dbr:Photosphere dbr:Effective_temperature dbr:Gaia_(spacecraft) dbr:Monoceros_(constellation) dbr:Main_sequence dbr:Star dbr:Stellar_spectrum dbr:Stellar_parallax dbr:Absolute_magnitude dbc:CN_stars dbc:FK_Comae_Berenices_variables dbr:Celestial_equator dbr:Stellar_core dbr:Sun dbr:CN_star dbr:Apparent_visual_magnitude dbr:Radial_velocity dbr:FK_Comae_Berenices_variable dbr:Giant_star dbr:Photometric_system dbr:Radius_of_the_Sun dbr:Sun's_luminosity dbr:Absorption_line dbr:Projected_rotational_velocity dbr:File:V645MonLightCurve.png |
| dbp:absmagV |
−1.00 (en) |
| dbp:appmagV |
4.690000 (xsd:double) |
| dbp:bV |
+1.49 (en) |
| dbp:class |
K4III (en) |
| dbp:constell |
dbr:Monoceros_(constellation) |
| dbp:epoch |
J2000 (en) |
| dbp:gravity |
1.680000 (xsd:double) |
| dbp:metalFe |
−0.26 (en) |
| dbp:pError |
0.300000 (xsd:double) |
| dbp:parallax |
7.250000 (xsd:double) |
| dbp:propMoDec |
−76.26 (en) |
| dbp:propMoRa |
+67.60 (en) |
| dbp:radialV |
+26.70 (en) |
| dbp:rotationalVelocity |
2.200000 (xsd:double) |
| dbp:uB |
+1.76 (en) |
| 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_Monoceros dbt:Val dbt:DEC dbt:Odlist dbt:RA |
| dcterms:subject |
dbc:Bright_Star_Catalogue_objects dbc:Durchmusterung_objects dbc:Flamsteed_objects dbc:Henry_Draper_Catalogue_objects dbc:Hipparcos_objects dbc:K-type_giants dbc:Monoceros_(constellation) dbc:Objects_with_variable_star_designations dbc:CN_stars dbc:FK_Comae_Berenices_variables |
| gold:hypernym |
dbr:Star |
| rdf:type |
owl:Thing dbo:Place dbo:Location schema:Place dbo:CelestialBody yago:Animal100015388 yago:CelestialBody109239740 yago:Giant101323781 yago:LivingThing100004258 yago:NaturalObject100019128 yago:Object100002684 yago:Organism100004475 yago:PhysicalEntity100001930 yago:WikicatK-typeGiants yago:WikicatK-typeStars dbo:Star yago:Star109444100 yago:Whole100003553 yago:WikicatFlamsteedObjects |
| rdfs:comment |
28 Monocerotis è una stella gigante arancione di magnitudine 4,69 situata nella costellazione dell'Unicorno. Dista 473 anni luce dal sistema solare. (it) 28 Monocerotis, som är stjärnans Flamsteed-beteckning, är en ensam stjärna belägen i den mellersta delen av stjärnbilden Enhörningen, som också har variabelbeteckningen V645 Monocerotis. Den har en genomsnittlig skenbar magnitud på ca 4,69 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 7,3 mas, beräknas den befinna sig på ett avstånd på ca 450 ljusår (ca 138 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet av ca 27 km/s. (sv) 南河增九（麒麟座28），又名BD-00 1882，HD 65953、SAO 135380、HR 3141，是麒麟座的一颗恒星，视星等为4.68，位于銀經222.35，銀緯14.81，其B1900.0坐标为赤經7h 56m 8s，赤緯-1° 14.81′ 54″。 (zh) 28 Monocerotis is a single star in the equatorial constellation of Monoceros. It has an orange-hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.69. The distance to this star is approximately 450 light years based on parallax, and it has an absolute magnitude of −1.00. The star is drifting further away from the Sun with a radial velocity of +26.7 km/s. Measurement of the star's proper motion anomaly by the Gaia spacecraft suggests a companion may be orbiting the star at a distance of 1.9 AU. (en) |
| rdfs:label |
28 Monocerotis (en) 28 Monocerotis (it) 28 Monocerotis (sv) 南河增九 (zh) |
| owl:sameAs |
freebase:28 Monocerotis yago-res:28 Monocerotis wikidata:28 Monocerotis dbpedia-it:28 Monocerotis dbpedia-sv:28 Monocerotis dbpedia-zh:28 Monocerotis https://global.dbpedia.org/id/3KEXr |
| prov:wasDerivedFrom |
wikipedia-en:28_Monocerotis?oldid=1100331974&ns=0 |
| foaf:depiction |
wiki-commons:Special:FilePath/V645MonLightCurve.png |
| foaf:isPrimaryTopicOf |
wikipedia-en:28_Monocerotis |
| foaf:name |
28 Monocerotis (en) |
| is dbo:wikiPageRedirects of |
dbr:HD_65953 |
| is dbo:wikiPageWikiLink of |
dbr:Chinese_star_names dbr:HD_65953 dbr:Table_of_stars_with_Flamsteed_designations dbr:List_of_stars_in_Monoceros |
| is foaf:primaryTopic of |
wikipedia-en:28_Monocerotis |
