About: LQ Andromedae

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LQ Andromedae (shortened as LQ And, also known as HR 9070 in the Bright Star Catalogue) is a variable star in the constellation Andromeda. Its maximum apparent visual magnitude is 6.5, placing it at the limit of the visibility to the naked eye. The brightness, however, drops down to 6.66 with a periodic cycle of roughly 7.44 hours. LQ Andromedae is also a spectroscopic binary with an orbital period of 7.413 days. Not much is known about the secondary component, but it is likely a low-mass companion (M<0.5 M☉). A circumstellar disk is also present in the system.

Attributes	Values
rdf:type	Thing place dbo:Location schema:Place celestial body star
rdfs:label	LQ Andromedae (en) LQ Андромеды (ru) 仙女座LQ (zh)
rdfs:comment	LQ Андромеды (лат. LQ Andromedae), HD 224559 — двойная звезда в созвездии Андромеды на расстоянии приблизительно 1350 световых лет (около 414 парсеков) от Солнца. Видимая звёздная величина звезды — от +6,66 до +6,5m. Орбитальный период — около 7,4132 суток. (ru) 仙女座LQ，又名BD+45 4381，HD 224559、SAO 53540、HR 9070，是仙女座的一颗恒星，视星等为6.54，位于銀經113.55，銀緯-15.5，其B1900.0坐标为赤經23h 53m 41.2s，赤緯+45° -15.5′ 23″。 (zh) LQ Andromedae (shortened as LQ And, also known as HR 9070 in the Bright Star Catalogue) is a variable star in the constellation Andromeda. Its maximum apparent visual magnitude is 6.5, placing it at the limit of the visibility to the naked eye. The brightness, however, drops down to 6.66 with a periodic cycle of roughly 7.44 hours. LQ Andromedae is also a spectroscopic binary with an orbital period of 7.413 days. Not much is known about the secondary component, but it is likely a low-mass companion (M<0.5 M☉). A circumstellar disk is also present in the system. (en)
foaf:name	LQ Andromedae (en)
foaf:depiction
dcterms:subject	Andromeda (constellation) B-type main-sequence stars Be stars Bright Star Catalogue objects Durchmusterung objects Henry Draper Catalogue objects Hipparcos objects Objects with variable star designations Spectroscopic binaries 2MASS objects
Wikipage page ID	58812001 (xsd:integer)
Wikipage revision ID	1093299071 (xsd:integer)
Link from a Wikipage to another Wikipage	Be star Durchmusterung Stellar classification Light curve Andromeda (constellation) B-type main-sequence stars Be stars Bright Star Catalogue objects Durchmusterung objects Henry Draper Catalogue objects Hipparcos objects Objects with variable star designations Spectroscopic binaries Constellation Andromeda (constellation) Henry Draper Catalogue Main sequence star 2MASS 2MASS objects Bright Star Catalogue Spectroscopic binary Apparent visual magnitude Emission lines Hipparcos Catalogue Smithsonian Astrophysical Observatory Star Catalog Tycho-2 Catalogue Photometric system Absorption lines Projected rotational velocity
sameAs	LQ Andromedae LQ Andromedae LQ Andromedae LQ Andromedae
dbp:wikiPageUsesTemplate	dbt:Reflist dbt:Short_description dbt:Solar_mass 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_orbit dbt:Starbox_reference dbt:Stars_of_Andromeda dbt:Val dbt:DEC dbt:RA
thumbnail	wiki-commons:Special:FilePath/LQAndLightCurve.png?width=300
appmag	5.840000 (xsd:double) 6.444000 (xsd:double) 6.466600 (xsd:double) 6.538000 (xsd:double) 6.545000 (xsd:double) 6.588000 (xsd:double) 6.617000 (xsd:double)
appmag 1 passband	U (en)
appmag 2 passband	B (en)
appmag 3 passband	V (en)
appmag 4 passband	G (en)
appmag v	6.500000 (xsd:double)
b-v	0.098000 (xsd:double)
class	B4Ven (en)
constell	Andromeda (constellation)
epoch	J2000 (en)
luminosity bolometric	2559 (xsd:integer)
p error	0.051900 (xsd:double)
parallax	2.416900 (xsd:double)
period unitless	640483.2000000001 (second)
variable	Be star
has abstract	LQ Andromedae (shortened as LQ And, also known as HR 9070 in the Bright Star Catalogue) is a variable star in the constellation Andromeda. Its maximum apparent visual magnitude is 6.5, placing it at the limit of the visibility to the naked eye. The brightness, however, drops down to 6.66 with a periodic cycle of roughly 7.44 hours. The stellar classification of this star is B4Ven, so it is a main sequence star that shows emission lines and broadened absorption lines induced by the fast projected rotational velocity of 300 km/s (the angle between the rotation axis and our line of sight has been estimated with a value of 72°). This leads to the classification of the star as a Be star. Further proof is the compatibility between the rotational and luminosity variability periods. LQ Andromedae is also a spectroscopic binary with an orbital period of 7.413 days. Not much is known about the secondary component, but it is likely a low-mass companion (M<0.5 M☉). A circumstellar disk is also present in the system. (en)

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