HD 85628

{{Starbox observe 2s

|epoch=J2000.0

|constell=Carina

|component1=A

|ra1={{RA|09|50|19.201}}

|dec1={{DEC|-66|06|49.90}}

|appmag_v1=

|component2=B

|ra2={{RA|09|50|18.697}}

|dec2={{DEC|-66|06|53.00}}

|appmag_v2=

}}

{{Starbox character

|component1=A

|class=A3V

|type=main sequence

|variable=planetary transit

|component2=B

|class2=K8V

|type2=main sequence

}}

{{Starbox astrometry

|component1=A

|parallax=5.9437

|p_error=0.0170

|parallax_footnote=

|prop_mo_ra={{val|5.910|0.019}}

|prop_mo_dec={{val|-15.044|0.019}}

|component2=B

|parallax2=5.9266

|p_error2=0.0253

|parallax_footnote2=

|prop_mo_ra2={{val|5.702|0.032}}

|prop_mo_dec2={{val|-13.161|0.029}}

}}

{{Starbox detail

|source=

|component1=A

|mass=1.75

|radius=1.92

|luminosity=12.2

|temperature=7,800

|gravity=4.1

|metal_fe=~0

|age_gyr=0.8

|component2=B

|mass2=0.6

}}

{{Starbox catalog

|names=bRing-1, HD 85628, MASCARA-4

}}

{{Starbox reference

|Simbad=HD+85628

}}

HD 85628 (MASCARA-4) is a binary star system in the constellation of Carina. The host star, HD 85628 A, is an A-type main-sequence star, the primary star of the system, with a hot Jupiter in orbit around it. The secondary star is HD 85628 B, a K-type main-sequence star. Little is known about it.

Nomenclature

This star system was first catalogued in the Henry Draper Catalog as HD 85628, its most common name. The Henry Draper Catalogue gave stars visible to the naked eye in suitable conditions a designation, indicating that this star can be seen with the naked eye. But in 2019, the Multi-site All-Sky Camera announced the discovery of the exoplanet HD 85628 Ab/MASCARA-4b around HD 85628 A. Thus, the primary star is sometimes catalogued as MASCARA-4.

Planetary system

In 2019, a hot Jupiter exoplanet was discovered by MASCARA using the transit method around HD 85628 A.

{{OrbitboxPlanet begin

| name = HD 85628 A}}

{{OrbitboxPlanet

| exoplanet = b

| mass = 3.1

| period = 2.8

| semimajor = 0.047

| eccentricity = 0

}}

References

{{reflist|refs=

{{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. Declinations -90_ to -53_Ƒ0 | location=Ann Arbor, Michigan

| publisher=Dept. of Astronomy, University of Michigan

| year=1975 | bibcode=1975mcts.book.....H }}

{{cite journal |bibcode=2020A&A...635A..60D |title=MASCARA-4 b/BRing-1 b: A retrograde hot Jupiter around a bright A-type star |last1=Dorval |first1=P. |last2=Talens |first2=G. J. J. |last3=Otten |first3=G. P. P. L. |last4=Brahm |first4=R. |last5=Jordán |first5=A. |last6=Torres |first6=P. |last7=Vanzi |first7=L. |last8=Zapata |first8=A. |last9=Henry |first9=T. |last10=Paredes |first10=L. |last11=Jao |first11=W. C. |last12=James |first12=H. |last13=Hinojosa |first13=R. |last14=Bakos |first14=G. A. |last15=Csubry |first15=Z. |last16=Bhatti |first16=W. |last17=Suc |first17=V. |last18=Osip |first18=D. |last19=Mamajek |first19=E. E. |last20=Mellon |first20=S. N. |last21=Wyttenbach |first21=A. |last22=Stuik |first22=R. |last23=Kenworthy |first23=M. |last24=Bailey |first24=J. |last25=Ireland |first25=M. |last26=Crawford |first26=S. |last27=Lomberg |first27=B. |last28=Kuhn |first28=R. |last29=Snellen |first29=I. |journal=Astronomy and Astrophysics |date=2020 |volume=635 |pages=A60 |doi=10.1051/0004-6361/201935611 |arxiv=1904.02733 |s2cid=102351446 }}

{{cite encyclopedia |title=The Extrasolar Planet Encyclopaedia — HD 85628 A b |url=https://exoplanet.eu/catalog/hd_85628_a_b--7080/ |encyclopedia=Extrasolar Planets Encyclopaedia |access-date=19 August 2023}}

{{cite web |url=https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TblView/nph-tblView?app=ExoTbls&config=compositepars |title=NASA Exoplanet Archive |access-date=13 June 2021 |archive-date=2021-04-22 |archive-url=https://web.archive.org/web/20210422040903/https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TblView/nph-tblView?app=ExoTbls&config=compositepars |url-status=dead}}

}}

Category:Carina (constellation)

Category:Binary stars

Category:A-type main-sequence stars

Category:M-type main-sequence stars

085628

Category:Planetary systems with one confirmed planet

Category:Planetary transit variables