Gliese 908
{{short description|Star in the constellation Pisces}}
{{Sky|23|49|12.52790|+|02|24|04.4072|19.275}}
{{Starbox begin}}
{{Starbox image
| image = 320px
| caption = A visual band light curve for BR Piscium, plotted from ASAS-SN data
}}
{{Starbox observe
| epoch = J2000
| constell = Pisces
}}
{{Starbox character
| variable = BY Dra
}}
{{Starbox astrometry
| radial_v = {{val|-71.37|0.12}}
| prop_mo_ra = +992.720
| prop_mo_dec = {{val|-968.806}}
| parallax = 169.2163
| p_error = 0.0281
| parallax_footnote = {{Cite Gaia EDR3|2739689239311660672}}
}}
{{Starbox detail
| radius = {{Val|0.409|0.023}}
| luminosity_bolometric = {{Val|0.0253|0.0006}}
| rotation = {{Val|50.83|0.35}} days
| temperature = {{Val|3600|100|fmt=commas}}
| metal_fe = {{val|−0.51|0.05}}
| age_gyr =
}}
{{Starbox catalog|names={{Odlist
|BD=+01°4774
|V=BR Piscium
|G=29-68
|G2=31-6
|SAO=128397
|LTT=17014
|PPM=174453
|IRAS=23466+0207
|GSC=00586-00610
|2MASS=J23491255+0224037
}}, Lalande 46650}}
{{Starbox reference
|Simbad=BR+Psc
}}
{{Starbox image
|image={{Location map|100x100|AlternativeMap=Pisces_constellation_map.svg
|alt=Gliese 908 is located in the constellation Pisces
|caption=Location of Gliese 908 in the constellation Pisces|border=infobox|mark=Red_pog.png|width=320
|label=Gliese 908
|position=left
|lat=28.9
|long=68.9
}}|caption=
}}
{{Starbox end}}
Gliese 908 is a red dwarf star, located in constellation Pisces at 19.3 light-years from Earth. It is a BY Draconis variable star with a variable star designation of BR Piscium. Its apparent magnitude varies between magnitude 8.93 and magnitude 9.03 as a result of starspots and varying chromospheric activity.
The variability of Gliese 908 was confirmed in 1994, although no period could be detected in its brightness changes. It was entered into the General Catalogue of Variable Stars in 1997.
Gliese 908 is a cool main sequence star, a red dwarf, with a spectral class of M1V Fe-1. The suffix indicates a noticeable deficiency in heavy elements.
References
{{reflist|refs=
{{cite journal| last1=Boro Saikia |first1=S. |last2=Marvin |first2=C. J.
| last3=Jeffers |first3=S. V. |last4=Reiners |first4=Ansgar
| last5=Cameron |first5=R. |last6=Marsden |first6=S. C.
| last7=Petit |first7=P. |last8=Warnecke |first8=J.
| last9=Yadav |first9=A. P. |last10=Teske |first10=J. K.
| last11=Shectman |first11=S. A. |last12=Crane |first12=J. D.
| last13=Thompson |first13=I. |last14=Keiser |first14=S.
| last15=Jenkins |first15=J. S. |last16=Berdiñas |first16=Z.
| last17=Diaz |first17=M. |last18=Kiraga |first18=M.
| last19=Barnes |first19=J. R. |display-authors=1
| title=Chromospheric activity catalogue of 4454 cool stars. Questioning the active branch of stellar activity cycles
| journal=Astronomy and Astrophysics
| volume=616 | pages=A108 | year=2018
| bibcode=2018A&A...616A.108B | arxiv=1803.11123
| doi=10.1051/0004-6361/201629518 | s2cid=118915212 }}
| title=Radii of 88 M Subdwarfs and Updated Radius Relations for Low-metallicity M-dwarf Stars
| last1=Kesseli | first1=Aurora Y. | last2=Kirkpatrick | first2=J. Davy
| last3=Fajardo-Acosta | first3=Sergio B. | last4=Penny | first4=Matthew T.
| last5=Gaudi | first5=B. Scott | last6=Veyette | first6=Mark
| last7=Boeshaar | first7=Patricia C. | last8=Henderson | first8=Calen B.
| last9=Cushing | first9=Michael C. | last10=Calchi-Novati | first10=Sebastiano
| last11=Shvartzvald | first11=Y. | last12=Muirhead | first12=Philip S.
| display-authors=1 | journal=The Astronomical Journal
| volume=157 | issue=2 | id=63 | pages=17 | date=February 2019
| arxiv=1810.07702 | bibcode=2019AJ....157...63K
| doi=10.3847/1538-3881/aae982 | s2cid=119325209 | doi-access=free }}
}}
{{Nearest star systems|4}}
{{Stars of Pisces}}
{{DEFAULTSORT:Gliese 908}}
Category:Pisces (constellation)