| absmag_v = +0.21[12]
}}{{Starbox orbit
| reference = [13]
| period = {{Val|365.68|8.02}}
| axis = {{Val|0.553|0.022}}
| eccentricity = {{Val|0.434|0.014}}
| inclination = {{Val|99.8|0.8}}
| node = {{Val|325.3|0.6}}
| periastron = {{nowrap|1983.92 ± 3.59}}
| periarg = {{Val|337.3|6.7}}
}}{{Starbox detail
| source =
| component1 = ψ Crt A
| mass =
| radius =
| luminosity = 75[14]
| temperature = 9,199[14]
| gravity = 3.8[16]
| metal_fe = 0.0[16]
| rotational_velocity = 33[5]
| age_gyr =
}}{{Starbox catalog
| names = ψ Crt, BD−17° 3321, HD 97411, HIP 54742, HR 4347, SAO 156528, {{nowrap|WDS J11125-1830AB}}.[19]
}}{{Starbox reference
| Simbad = psi+Crt | sn=ψ Crt
| Simbad2 = ADS+8086+A | sn2=ψ Crt A
| Simbad3 = ADS+8086+B | sn3=ψ Crt B
}}{{Starbox end}}Psi Crateris, Latinized from ψ Crateris, is the Bayer designation for a visual binary[13] star system in the southern constellation of Crater. It is faintly visible to the naked eye with an apparent visual magnitude of 6.13.[3] According to the Bortle scale, it requires dark suburban or rural skies to view. Based upon an annual parallax shift of 6.5 mas,[ the system is located approximately 500 light years away from the Sun.]
The components in this star system have an orbital period of about 366 years with an eccentricity of 0.43.[13] The angular size of the orbit's semimajor axis is about half an arc second. The primary member, component A, is an ordinary A-type main sequence star with a visual magnitude of 6.24 and a stellar classification of A0 V.[5] It was a candidate λ Boötis star, but this was later rejected when the spectrum was found to be normal. Any peculiarities may have instead resulted from the overlapping spectra of the two stars.[25] The star is radiating about 75 times the solar luminosity from it outer atmosphere at an effective temperature of 9,199 K.[14] The fainter secondary, component B, has a visual magnitude of 8.34[4] and a class of A3.[6]
References
1. ^1 {{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | postscript=. }}
2. ^1 2 {{citation | title=Metallicity estimates for A-, F-, and G-type stars from the Edinburgh-Cape Blue Object Survey | display-authors=1 | last1=Beers | first1=T. C. | last2=Rossi | first2=S. | last3=O'Donoghue | first3=D. | last4=Kilkenny | first4=D. | last5=Stobie | first5=R. S. | last6=Koen | first6=C. | last7=Wilhelm | first7=R. | journal=Monthly Notices of the Royal Astronomical Society | volume=320 | issue=4 | pages=451−464 | date=February 2001 | doi=10.1046/j.1365-8711.2001.03952.x | bibcode=2001MNRAS.320..451B | arxiv=astro-ph/0011491 | postscript=. }}
3. ^1 {{citation | title=An Evaluation of the Membership Probability of 212 λ Boo Stars. I. A Catalogue | display-authors=1 | last1=Murphy | first1=Simon J. | last2=Corbally | first2=Christopher J. | last3=Gray | first3=Richard O. | last4=Cheng | first4=Kwang-Ping | last5=Neff | first5=James E. | last6=Koen | first6=Chris | last7=Kuehn | first7=Charles A. | last8=Newsome | first8=Ian | last9=Riggs | first9=Quinlin | journal=Publications of the Astronomical Society of Australia | volume=32 | id=e036 | pages=43 | date=October 2015 | doi=10.1017/pasa.2015.34 | bibcode=2015PASA...32...36M | arxiv=1508.03633 | postscript=. }}
4. ^1 2 {{citation | last1=Cvetkovic | first1=Z. | last2=Ninkovic | first2=S. | title=On the Component Masses of Visual Binaries | journal=Serbian Astronomical Journal | postscript=. | volume=180 | pages=71–80 | date=2010 | doi=10.2298/SAJ1080071C | bibcode =2010SerAJ.180...71C }}
5. ^1 2 {{citation | last1=Malkov | first1=O. Yu. | last2=Tamazian | first2=V. S. | last3=Docobo | first3=J. A. | last4=Chulkov | first4=D. A. | title=Dynamical Masses of a Selected Sample of Orbital Binaries | display-authors=1 | journal=Astronomy & Astrophysics | volume=546 | id=A69 | pages=5 | date=2012 | doi=10.1051/0004-6361/201219774 | bibcode =2012A&A...546A..69M }}
6. ^1 2 3 {{citation | title=Speckle Interferometry at SOAR in 2014 | display-authors=1 | last1=Tokovinin | first1=Andrei | last2=Mason | first2=Brian D. | last3=Hartkopf | first3=William I. | last4=Mendez | first4=Rene A. | last5=Horch | first5=Elliott P. | journal=The Astronomical Journal | volume=150 | issue=2 | id=50 | pages=17 | date=August 2015 | doi=10.1088/0004-6256/150/2/50 | bibcode=2015AJ....150...50T | arxiv=1506.05718 | postscript=. }}
7. ^1 2 3 {{citation | display-authors=1 | last1=McDonald | first1=I. | last2=Zijlstra | first2=A. A. | last3=Boyer | first3=M. L. | title=Fundamental Parameters and Infrared Excesses of Hipparcos Stars | journal=Monthly Notices of the Royal Astronomical Society | volume=427 | issue=1 | pages=343–57 | date=2012 | postscript=. | bibcode=2012MNRAS.427..343M | arxiv=1208.2037 | doi=10.1111/j.1365-2966.2012.21873.x }}
8. ^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=. }}
9. ^1 2 3 {{citation | display-authors=1 | last1=Royer | first1=F. | last2=Zorec | first2=J. | last3=Gómez | first3=A. E. | title=Rotational velocities of A-type stars. III. Velocity distributions | journal=Astronomy and Astrophysics | volume=463 | issue=2 | pages=671–682 | date=February 2007 | doi=10.1051/0004-6361:20065224 | bibcode=2007A&A...463..671R | arxiv=astro-ph/0610785 | postscript=. }}
10. ^1 2 3 {{citation | last1=Nicolet | first1=B. | title=Photoelectric photometric Catalogue of homogeneous measurements in the UBV System | journal=Astronomy and Astrophysics Supplement Series | volume=34 | pages=1–49 | year=1978 | bibcode=1978A&AS...34....1N | postscript=. }}
11. ^1 {{citation | title=psi Crt -- Double or multiple star | work=SIMBAD Astronomical Database | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=psi+Crt | accessdate=2017-02-26 | postscript=. }}