| 释义 |
- References
{{DISPLAYTITLE:Delta1 Chamaeleontis}}{{other stars by Bayer designation|Delta Chamaeleontis{{!}}δ Chamaeleontis}}{{Starbox begin
| name = δ1 Chamaeleontis
}}{{Starbox observe
| epoch = J2000.0
| equinox = J2000.0 (ICRS)
| constell = Chamaeleon
| ra = {{RA|10|45|16.31446}}
| dec = {{DEC|−80|28|10.5409}}
| appmag_v = 5.47[3] (6.266 + 6.503)[4]
}}{{Starbox character
| class = K0 III[5]
| b-v = +0.95[3]
| u-b = +0.74[3]
| r-i =
| variable =
}}{{Starbox astrometry
| radial_v = +10.7[8]
| prop_mo_ra = −17.28
| prop_mo_dec = −29.25
| parallax = 9.36
| p_error = 0.45
| parallax_footnote =
| absmag_v = +0.32[12]
}}{{Starbox detail
| source =
| mass =
| radius =
| luminosity = 76[13]
| temperature = 5,052[13]
| gravity =
| metal_fe =
| rotational_velocity =
| rotation =
| age_gyr =
}}{{Starbox catalog
| names = δ1 Cha, CPD−79° 554, HD 93779, HIP 52595, HR 4231, SAO 258592.[15]
}}{{Starbox reference
| Simbad = del01+Cha
}}{{starbox end}}Delta1 Chamaeleontis, Latinized from δ1 Chamaeleontis, is a close double star located in the constellation Chamaeleon. It has a combined apparent visual magnitude of 5.47,[3] which is just bright enough for the star to be faintly seen on a dark rural night. With an annual parallax shift of 9.36 mas,[ it is located around 350 light years from the Sun. This pair is one of two stars named Delta Chamaeleontis, the other being the slightly brighter Delta2 Chamaeleontis located about 6 arcminutes away.[18] Delta Chamaeleontis forms the southernmost component of the constellation's "dipper" or bowl. Together with Gamma Chamaeleontis, they point to a spot that is within 2° of the south celestial pole.[19]]The two components of Delta1 Chamaeleontis have visual magnitudes of 6.3 and 6.5. As of 2000, the pair had an angular separation of 0.783 arcseconds along a position angle of 83.8°.[4] They can be separated by a {{Convert|20|cm|in|abbr=on|lk=off|order=flip}} aperture telescope.[18] The pair is a source of X-ray emission with a flux of {{Val|27.4e−17|u=W/m2}}.[22] The stellar classification of Delta1 Chamaeleontis is K0 III,[5] which matches an evolved K-type giant star. References1. ^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 | 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 | bibcode=2012MNRAS.427..343M | arxiv=1208.2037 | doi=10.1111/j.1365-2966.2012.21873.x | postscript=. }}
3. ^1 2 {{citation | title=Astronomy of the Milky Way: The Observer’s Guide to the Southern Milky Way | series=The Patrick Moore Practical Astronomy Series | first1=Michael | last1=Inglis | year=2012 | page=106 | publisher=Springer Science & Business Media | isbn=1447106415 | url=https://books.google.com/books?id=Gu4GCAAAQBAJ&pg=PA106 | postscript=. }}
4. ^1 {{citation | title=The ROSAT all-sky survey catalogue of optically bright late-type giants and supergiants | display-authors=1 | last1=Hunsch | first1=M. | last2=Schmitt | first2=J. H. M. M. | last3=Voges | first3=W. | journal=Astronomy and Astrophysics Supplement | volume=127 | pages=251–255 | date=January 1998 | doi=10.1051/aas:1998347 | bibcode=1998A&AS..127..251H | postscript=. }}
5. ^1 2 {{citation | last1=Fabricius | first1=C. | last2=Makarov | first2=V. V. | title=Two-colour photometry for 9473 components of close Hipparcos double and multiple stars | journal=Astronomy and Astrophysics | volume=356 | pages=141–145 | date=April 2000 | bibcode=2000A&A...356..141F | postscript=. }}
6. ^1 2 {{citation | last1=Houk | first1=N. | last2=Cowley | first2=A. P. | title=Catalogue of two-dimensional spectral types for the HD stars | volume=I | year=1975 | publisher=University of Michigan | bibcode=1975mcts.book.....H | postscript=. }}
7. ^1 {{citation | last=Wilson | first=R. E. | year=1953 | title=General Catalogue of Stellar Radial Velocities | publisher=Carnegie Institute of Washington, D.C. | bibcode=1953GCRV..C......0W | postscript=. }}
8. ^1 2 3 4 {{citation | 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 | display-authors=1 | bibcode=1966CoLPL...4...99J | postscript=. }}
9. ^1 {{citation | title=Deep-Sky Companions: The Caldwell Objects | first1=Stephen James | last1=O'Meara | year=2002 | publisher=Cambridge University Press | isbn=0521827965 | page=424 | url=https://books.google.com/books?id=3Hg6YHgx9nAC&pg=PA427&lpg=PA427 | postscript=. }}
10. ^1 {{citation | title=del01 Cha -- Star | work=SIMBAD Astronomical Database | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=del01+Cha | accessdate=2016-12-11 | postscript=. }}
[1][2][3][4][5][6][7][8][9][10]
}}{{Stars of Chamaeleon|state=collapsed}} 7 : K-type giants|Chamaeleon (constellation)|Bayer objects|Durchmusterung objects|Hipparcos objects|HR objects|Henry Draper Catalogue objects |