About: HD 233731

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HD 233731, or HAT-P-22, is a suspected multiple star system in the northern circumpolar constellation of Ursa Major. It is invisible to the naked eye, having an apparent visual magnitude of 9.732. This system is located at a distance of 267 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +13 km/s.

Attributes	Values
rdf:type	Thing place dbo:Location schema:Place celestial body star
rdfs:label	HD 233731 (en) HAT-P-22 (ru) HD 233731 (sv)
rdfs:comment	HAT-P-22 (HD 233731) — звезда, которая находится в созвездии Большая Медведица на расстоянии около 267 световых лет от нас. Вокруг звезды обращается, как минимум, одна планета. (ru) HD 233731 är en ensam stjärna belägen i den mellersta delen av stjärnbilden Stora björnen och misstänks ha en följeslagare. Den har en skenbar magnitud av ca 9,76 och kräver en stark handkikare eller ett mindre teleskop för att kunna observeras. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 12,2 mas, beräknas den befinna sig på ett avstånd på ca 267 ljusår (ca 82 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 13 km/s. (sv) HD 233731, or HAT-P-22, is a suspected multiple star system in the northern circumpolar constellation of Ursa Major. It is invisible to the naked eye, having an apparent visual magnitude of 9.732. This system is located at a distance of 267 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +13 km/s. (en)
name	HAT-P-22 (en)
foaf:depiction
dct:subject	G-type main-sequence stars Henry Draper Catalogue objects Planetary systems with one confirmed planet Ursa Major (constellation) Planetary transit variables 2MASS objects
Wikipage page ID	64482082 (xsd:integer)
Wikipage revision ID	1034470052 (xsd:integer)
Link from a Wikipage to another Wikipage	Rotation period Metallicity Ursa Major Stellar classification G-type main-sequence stars Henry Draper Catalogue objects Planetary systems with one confirmed planet Ursa Major (constellation) Photosphere Effective temperature Light year Star Stellar parallax Planetary transit variables Transit (astronomy) G-type main-sequence star HAT-P-22b 2MASS objects Angular separation Sun Circumpolar constellation Rossiter-McLaughlin effect Apparent visual magnitude Radial velocity Chromospheric activity Semimajor axis Luminosity of the Sun
sameAs	HD 233731 HD 233731 HD 233731 HD 233731
dbp:wikiPageUsesTemplate	dbt:OrbitboxPlanet dbt:OrbitboxPlanet_begin dbt:OrbitboxPlanet_hypothetical dbt:Orbitbox_end dbt:Reflist dbt:Short_description dbt:Sky dbt:Starbox_astrometry dbt:Starbox_begin dbt:Starbox_catalog dbt:Starbox_character dbt:Starbox_detail dbt:Starbox_end dbt:Starbox_observe dbt:Starbox_reference dbt:Val dbt:± dbt:DEC dbt:Odlist dbt:RA dbt:Stars_of_Ursa_Major
thumbnail	wiki-commons:Special:FilePath/Exoplanet_Comparison_HAT-P-22_b.png?width=300
appmag v	9.732000 (xsd:double)
b-v	0.860000 (xsd:double)
class	G5V (en)
constell	Ursa Major
eccentricity	0.016000 (xsd:double)
epoch	J2000 (en)
exoplanet	HAT-P-22b c (en)
inclination	86.460000 (xsd:double)
mass	2.192000 (xsd:double)
p error	0.037100 (xsd:double)
parallax	12.201400 (xsd:double)
period	3.212233 (xsd:double)
prop mo dec	83.727000 (xsd:double)
prop mo ra	−26.182 (en)
radius	1.060000 (xsd:double)
semimajor	0.041710 (xsd:double)
has abstract	HD 233731, or HAT-P-22, is a suspected multiple star system in the northern circumpolar constellation of Ursa Major. It is invisible to the naked eye, having an apparent visual magnitude of 9.732. This system is located at a distance of 267 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +13 km/s. The stellar classification of the primary is G5V, matching an ordinary G-type main-sequence star. The star has a low level of stellar activity with an estimated age of 9 to 12 billion years old. Its metallicity is twice that of the Sun, unusual for its advanced age. HD 233731 has a similar mass and radius as the Sun, and is spinning with a rotation period of 28.7 days. It is radiating 77% of the luminosity of the Sun from its photosphere at an effective temperature of 5314 K. A faint stellar companion (2MASS J10224397+5007504) with a red hue is located at an angular separation of 9 arcseconds from the primary. In 2015, a spectroscopic stellar companion was reported with a semimajor axis of less than 33 AU. This star has an effective temperature of 4,000+250−400 K with a mass of 0.63+0.07−0.17 M☉. (en) HAT-P-22 (HD 233731) — звезда, которая находится в созвездии Большая Медведица на расстоянии около 267 световых лет от нас. Вокруг звезды обращается, как минимум, одна планета. (ru) HD 233731 är en ensam stjärna belägen i den mellersta delen av stjärnbilden Stora björnen och misstänks ha en följeslagare. Den har en skenbar magnitud av ca 9,76 och kräver en stark handkikare eller ett mindre teleskop för att kunna observeras. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 12,2 mas, beräknas den befinna sig på ett avstånd på ca 267 ljusår (ca 82 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 13 km/s. (sv)
prov:wasDerivedFrom	wikipedia-en:HD_233731?oldid=1034470052&ns=0
page length (characters) of wiki page	11334 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:HD_233731
is Link from a Wikipage to another Wikipage of	List of exoplanets discovered in 2010

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