“Eta2 Coronae Australis”的意思、由来-开放百科全书

Eta² Coronae Australis is a B-type subgiant star^[4] with an effective temperature of about 11,000 K.^[11] It has an absolute magnitude of −0.75,^[10] and a mass of 3.23 times that of the Sun. It is 171 times as luminous as the Sun.^[11]

Sources

1. ^¹²{{cite journal|title=The Tycho-2 catalogue of the 2.5 million brightest stars|author=Høg, E.|display-authors=etal|date=2000|journal=Astronomy and Astrophysics|volume=355|pages=L27–L30|bibcode=2000A&A...355L..27H}}
2. ^¹²{{cite journal|bibcode=1978mcts.book.....H|title=Michigan Catalogue of two dimensional spectral types for the HD stars|last1=Houk|first1=N.|journal=Michigan Spectral Survey|volume=2|date=1987}}
3. ^¹{{cite journal|last1=Corben|first1=P. M.|last2=Stoy|first2=R. H.|title=Photoelectric Magnitudes and Colours for Bright Southern Stars|journal=Monthly Notes of the Astronomical Society of Southern Africa|volume=27|page=11|year=1968|bibcode=1968MNSSA..27...11C}}
4. ^¹{{cite journal|title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system|author=Gontcharov, G. A.|date=2006|journal=Astronomy Letters|volume=32|issue=11|pages=759–771|bibcode=2006AstL...32..759G|doi=10.1134/S1063773706110065|arxiv=1606.08053}}
5. ^¹²{{cite journal|bibcode=1980A&AS...40..199P|title=An Analysis of the Hauck / Mermilliod Catalogue of Homgeneous Four-Color Data - Part Two|author1=Philip, A. Davis|author2=Egret, D.|journal=Astronomy and Astrophysics Supplement|volume=40|page=199|date=1980}}
6. ^¹²³{{cite journal|bibcode=2012A&A...537A.120Z|doi=10.1051/0004-6361/201117691|arxiv=1201.2052|title=Rotational velocities of A-type stars. IV. Evolution of rotational velocities|journal=Astronomy & Astrophysics|volume=537|pages=A120|year=2012|last1=Zorec|first1=J.|last2=Royer|first2=F.}}

词条	Eta2 Coronae Australis
释义	Sources {{DISPLAYTITLE:Eta² Coronae Australis}}{{other stars by Bayer designation\|Eta Coronae Australis{{!}}η Coronae Australis}}{{Starbox begin\|name=η² Coronae Australis}}{{Starbox observe \|epoch=J2000 \|constell=Corona Australis \|ra={{RA\|18\|49\|34.99623}} \|dec={{DEC\|-43\|26\|02.7673}} \|appmag_v=5.587^[3] }}{{Starbox character \|class=B9IV^[4] \|b-v=−0.08^[5] }}{{Starbox astrometry \|radial_v=−23.00 ± 4.3^[6] \|prop_mo_ra=−2.32 \|prop_mo_dec=−25.49 \|parallax=6.77 \|p_error=0.34 \|parallax_footnote= \|absmag_v=−0.75^[10] }}{{Starbox detail \|source=^[11] \|mass=3.23 ± 0.08 \|radius= \|temperature=10940 \|luminosity=171 \|gravity= \|metal_fe= \|rotational_velocity=30 \|age_gyr= }}{{Starbox catalog \|names={{odlist\|CD=-43° 12854\|HD=173861\|HIP=92382\|HR=7068\|SAO=229307}} }}{{Starbox reference \|Simbad=eta02+CrA }}{{Starbox end}}Eta² Coronae Australis (η² CrA), is a star located in the constellation Corona Australis. Its apparent magnitude is 5.587.^[3] Parallax measurements by Hipparcos put the system at about 480 light-years, or 148 parsecs, away. Eta² Coronae Australis is a B-type subgiant star^[4] with an effective temperature of about 11,000 K.^[11] It has an absolute magnitude of −0.75,^[10] and a mass of 3.23 times that of the Sun. It is 171 times as luminous as the Sun.^[11] Sources 1. ^¹²{{cite journal\|title=The Tycho-2 catalogue of the 2.5 million brightest stars\|author=Høg, E.\|display-authors=etal\|date=2000\|journal=Astronomy and Astrophysics\|volume=355\|pages=L27–L30\|bibcode=2000A&A...355L..27H}} 2. ^¹²{{cite journal\|bibcode=1978mcts.book.....H\|title=Michigan Catalogue of two dimensional spectral types for the HD stars\|last1=Houk\|first1=N.\|journal=Michigan Spectral Survey\|volume=2\|date=1987}} 3. ^¹{{cite journal\|last1=Corben\|first1=P. M.\|last2=Stoy\|first2=R. H.\|title=Photoelectric Magnitudes and Colours for Bright Southern Stars\|journal=Monthly Notes of the Astronomical Society of Southern Africa\|volume=27\|page=11\|year=1968\|bibcode=1968MNSSA..27...11C}} 4. ^¹{{cite journal\|title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system\|author=Gontcharov, G. A.\|date=2006\|journal=Astronomy Letters\|volume=32\|issue=11\|pages=759–771\|bibcode=2006AstL...32..759G\|doi=10.1134/S1063773706110065\|arxiv=1606.08053}} 5. ^¹²{{cite journal\|bibcode=1980A&AS...40..199P\|title=An Analysis of the Hauck / Mermilliod Catalogue of Homgeneous Four-Color Data - Part Two\|author1=Philip, A. Davis\|author2=Egret, D.\|journal=Astronomy and Astrophysics Supplement\|volume=40\|page=199\|date=1980}} 6. ^¹²³{{cite journal\|bibcode=2012A&A...537A.120Z\|doi=10.1051/0004-6361/201117691\|arxiv=1201.2052\|title=Rotational velocities of A-type stars. IV. Evolution of rotational velocities\|journal=Astronomy & Astrophysics\|volume=537\|pages=A120\|year=2012\|last1=Zorec\|first1=J.\|last2=Royer\|first2=F.}} ^[1]^[2]^[3]^[4]^[5]^[6] }}{{Stars of Corona Australis}}{{subgiant-star-stub}} 7 : Corona Australis\|Bayer objects\|B-type subgiants\|Durchmusterung objects\|Henry Draper Catalogue objects\|Hipparcos objects\|HR objects
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