| absmag_v = −0.83[11]
}}{{Starbox detail
| source = [12]
| mass = 1.0
| radius = {{Val|62|1}}
| luminosity = 513
| temperature = 3499
| gravity = 0.84
| metal_fe = 0.0
| rotational_velocity =
| age_myr =
}}{{Starbox catalog
| names = {{odlist | B=γ Hyi | CD=−74° 276 | FK5= | HD=24512 | HIP=17678 | HR=1208 | SAO=256029 }}[13]
}}{{Starbox reference
| Simbad = gam+Hyi
}}{{Starbox end}}γ Hydri, Latinised as Gamma Hydri, is a solitary,[14] red-hued star in the constellation Hydrus. It has an apparent visual magnitude of 3.26,[3] making it easily visible to the naked eye at night. Based upon an annual parallax shift of 15.24 mas as measured from Earth,[ the system is located about 214 light years from the Sun.]
This is an evolved red giant star with a stellar classification of M1 III,[4] and is most like on the asymptotic giant branch of the HR diagram.[18] It is a semiregular variable that pulsates between magnitudes 3.26 and 3.33, although its period is not known precisely.[19] It has about the same mass as the Sun, but has expanded to around 62 times the Sun's radius. The star is radiating 513 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 3,499 K.[12]
References
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2. ^1 2 {{citation | display-authors=1 | last1=Johnson | first1=H. L. | last2=Iriarte | first2=B. | last3=Mitchell | first3=R. I. | last4=Wisniewskj | first4=W. Z. | title=UBVRIJKL photometry of the bright stars | journal=Communications of the Lunar and Planetary Laboratory | volume=4 | issue=99 | year=1966 | bibcode=1966CoLPL...4...99J | postscript=. }}
3. ^1 2 {{citation | title=Michigan catalogue of two-dimensional spectral types for the HD stars | volume=1 | last1=Houk | first1=Nancy | postscript=. | publication-place=Ann Arbor, Michigan | publisher=Dept. of Astronomy, University of Michigan | year=1979 | bibcode=1978mcts.book.....H }}
4. ^1 {{citation | last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | title=A catalogue of multiplicity among bright stellar systems | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869–879 | date=September 2008 | doi=10.1111/j.1365-2966.2008.13596.x | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | postscript=. }}
5. ^1 {{citation | last1=de Bruijne | first1=J. H. J. | last2=Eilers | first2=A.-C. | title=Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project | journal=Astronomy & Astrophysics | volume=546 | id=A61 | pages=14 | date=October 2012 | doi=10.1051/0004-6361/201219219 | bibcode=2012A&A...546A..61D | arxiv=1208.3048 | postscript=. }}
6. ^1 2 {{citation | title=Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER | last1=Cruzalèbes | first1=P. | last2=Jorissen | first2=A. | last3=Rabbia | first3=Y. | last4=Sacuto | first4=S. | last5=Chiavassa | first5=A. | last6=Pasquato | first6=E. | last7=Plez | first7=B. | last8=Eriksson | first8=K. | last9=Spang | first9=A. | last10=Chesneau | first10=O. | journal=Monthly Notices of the Royal Astronomical Society | volume=434 | issue=1 | pages=437–450 | date=September 2013 | doi=10.1093/mnras/stt1037 | bibcode=2013MNRAS.434..437C | arxiv=1306.3288 | display-authors=1 | postscript=. }}
7. ^1 2 {{citation | title=VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system | journal=CDS/ADC Collection of Electronic Catalogues | last1=Ducati | first1=J. R. | volume=2237 | year=2002 | postscript=. | bibcode=2002yCat.2237....0D }}
8. ^1 {{citation | title=Long-term Photometry and Periods for 261 Nearby Pulsating M Giants | last1=Tabur | first1=V. | last2=Bedding | first2=T. R. | author2-link=Tim Bedding | last3=Kiss | first3=L. L. | last4=Moon | first4=T. T. | last5=Szeidl | first5=B. | last6=Kjeldsen | first6=H. | journal = Monthly Notices of the Royal Astronomical Society | volume=400 | issue=4 | pages=1945–61 | date=2009 | doi=10.1111/j.1365-2966.2009.15588.x | arxiv=0908.3228 | bibcode=2009MNRAS.400.1945T | postscript=. }}
9. ^1 {{citation | title=Mg II chromospheric radiative loss rates in cool active and quiet stars | last1=Cardini | first1=D. | postscript=. | journal=Astronomy and Astrophysics | volume=430 | pages=303–311 | date=January 2005 | doi=10.1051/0004-6361:20041440 | bibcode=2005A&A...430..303C |arxiv = astro-ph/0409683 }}
10. ^1 {{cite simbad | title=gam Hyi | accessdate=2017-08-18 | postscript=. }}