HD 121228

{{Short description|Star in the constellation Centaurus}} {{Starbox begin | name = HD 121228 }} {{Starbox image | image = [[File:HD 121228.jpg|250px]] | caption = }} {{Starbox observe | epoch = J2000 | constell = [[Centaurus]] | pronounce = | ra = {{RA|13|55|52.322}}<ref name=dr3/> | dec = {{DEC|-59|22|16.45}}<ref name=dr3/> | appmag_v = 7.86<ref name=ucac4/> }} {{Starbox character | class = B1 Ib<ref name=houk1975/> | appmag_1_passband = U | appmag_1 = 7.34 | appmag_2_passband = B | appmag_2 = 8.00 | appmag_3_passband = V | appmag_3 = 7.86 | appmag_4_passband = R | appmag_4 = 8.88 | appmag_5_passband = G | appmag_5 = 7.7591 | appmag_6_passband = J | appmag_6 = 7.428 | appmag_7_passband = H | appmag_7 = 7.426 | appmag_8_passband = K | appmag_8 = 7.385 | variable = }} {{Starbox astrometry | radial_v = | prop_mo_ra = −3.376<ref name=dr3/> | prop_mo_dec = −1.300<ref name=dr3/> | parallax = 0.5846 | p_error = 0.0260 | parallax_footnote = <ref name=dr3/> | dist_ly = | dist_pc = | absmag_v = −5.32<ref name=melnik2020/> }} {{Starbox detail | source =  | mass = 7.0<ref name=tetzlaff/> | radius = 19.6<ref name=kervella2021/> | temperature = 26,424<ref name=westin/> | luminosity = 4,124<ref name=fouesneau2022/> | gravity = 2.14<ref name=fouesneau2022/> | metal_fe = | rotation = | age_myr = 31.6<ref name=tetzlaff/> }} {{Starbox catalog | names = {{odlist | CD=-58°5362 | HIP=68034 | SAO=241302 }} }} {{Starbox reference | Simbad = HD+121228 }} {{Starbox end}}

'''HD 121228''' is a [[blue supergiant]] star located in the constellation [[Centaurus]]. The star is noted for its close visual proximity to the planetary nebula [[SuWt 2]].<ref name=simbad/>

==References==

<ref name=simbad>{{cite simbad |title=HD 121228|access-date=2023-01-11 }}</ref>

<ref name=fouesneau2022>{{cite journal |bibcode=2022A&A...662A.125F |title=Astrophysical parameters from Gaia DR2, 2MASS, and AllWISE |last1=Fouesneau |first1=M. |last2=Andrae |first2=R. |last3=Dharmawardena |first3=T. |last4=Rybizki |first4=J. |last5=Bailer-Jones |first5=C. A. L. |last6=Demleitner |first6=M. |journal=Astronomy and Astrophysics |year=2022 |volume=662 |pages=A125 |doi=10.1051/0004-6361/202141828 |arxiv=2201.03252 |s2cid=245837778 }}</ref>

<ref name=kervella2021>{{cite journal | last1 = Kervella | first1 = Pierre | last2 = Arenou | first2 = Frédéric | last3 = Thévenin | first3 = Frédéric | title = Stellar and substellar companions from ''Gaia'' EDR3 | journal = Astronomy & Astrophysics | year = 2022 | volume = 657 | page = A7 | issn = 0004-6361 | eissn = 1432-0746 | doi = 10.1051/0004-6361/202142146 | bibcode = 2022A&A...657A...7K | arxiv = 2109.10912 | doi-access = free}}</ref>

<ref name=melnik2020>{{cite journal |bibcode=2020Ap&SS.365..112M |title=Distance scale for high-luminosity stars in OB associations and in field with Gaia DR2. Spurious systematic motions |last1=Melnik |first1=A. M. |last2=Dambis |first2=A. K. |journal=Astrophysics and Space Science |year=2020 |volume=365 |issue=7 |page=112 |doi=10.1007/s10509-020-03827-0 |arxiv=2006.14649 |s2cid=220128144 }}</ref>

<ref name=ucac4>{{cite journal|bibcode=2012yCat.1322....0Z|title=VizieR Online Data Catalog: UCAC4 Catalogue (Zacharias+, 2012)|journal=VizieR On-line Data Catalog|last1=Zacharias|first1=N.|last2=Finch|first2=C. T.|last3=Girard|first3=T. M.|last4=Henden|first4=A.|last5=Bartlett|first5=J. L.|author5-link=Jennifer Bartlett (astronomer)|last6=Monet|first6=D. G.|last7=Zacharias|first7=M. I.|year=2012}}</ref>

<ref name=tetzlaff>{{cite journal|bibcode=2011MNRAS.410..190T|title=A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun|journal=Monthly Notices of the Royal Astronomical Society|volume=410|issue=1|pages=190|last1=Tetzlaff|first1=N.|last2=Neuhäuser|first2=R.|last3=Hohle|first3=M. M.|year=2011|arxiv=1007.4883|doi=10.1111/j.1365-2966.2010.17434.x|doi-access=free |s2cid=118629873 }}</ref>

<ref name=westin>{{cite journal|bibcode=1985A&AS...60...99W|title=The local system of early type stars. Spatial extent and kinematics|journal=Astronomy and Astrophysics Supplement Series|volume=60|pages=99|last1=Westin|first1=T. N. G.|year=1985}}</ref>

<ref name=houk1975>{{cite journal | title=Michigan catalogue of two-dimensional spectral types for the HD stars | volume=1 | last1=Houk | first1=Nancy | journal=University of Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars. Volume I | location=Ann Arbor, Michigan | publisher=Dept. of Astronomy, University of Michigan | year=1975 | bibcode=1975mcts.book.....H }}</ref> </references>

==See also== *[[Zeta Persei]] - Same spectral class

[[Category:Henry Draper Catalogue objects|121228]] [[Category:Hipparcos objects|068034]] [[Category:B-type supergiants]] [[Category:Centaurus]] [[Category:Durchmusterung objects]]