| 词条 | Tau1 Serpentis |
| 释义 |
| name = τ1 Serpentis}}{{Starbox observe | epoch = J2000.0 | equinox = J2000.0 (ICRS) | constell = Serpens | ra = {{RA|15|25|47.3967}}[1] | dec = {{DEC|+15|25|40.930}}[1] | appmag_v=5.13 to 5.20[2] }}{{Starbox character | class = M1III[1] | u-b = +1.95[3] | b-v = +1.66[3] | r-i = +1.04[3] }}{{Starbox astrometry | radial_v = −19.8 ± 0.9[1] | prop_mo_ra = −14.02[1] | prop_mo_dec = −7.51[1] | parallax = 3.55 | p_error = 0.76 | parallax_footnote = [1] | absmag_v= −1.45[4] }}{{Starbox detail | radius = 54[5] }}{{Starbox catalog | names={{odlist | B=τ1 Ser | F=9 Serpentis | BD=+15° 2858 | FK5=570 | HD=137471 | HIP=75530 | HR=5739 | SAO=101545 | GC=20740| PPM=}}[1] }}{{Starbox reference | Simbad=tau1+ser}}{{Starbox end}}Tau1 Serpentis, Latinized from τ1 Serpentis, is an M-type giant star in the constellation of Serpens, approximately 900 light-years from Earth.[1] It has an apparent visual magnitude which varies between 5.13 and 5.20.[2] References1. ^1 2 3 4 5 6 7 8 {{SIMBAD link|tau1+ser|NSV 7074 -- Variable Star}}, database entry, SIMBAD. Accessed on line September 19, 2008. {{Stars of Serpens}}{{giant-star-stub}}2. ^1 NSV 7074, database entry, New Catalogue of Suspected Variable Stars, the improved version, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line September 19, 2008. 3. ^1 2 HR 5739, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line September 19, 2008. 4. ^{{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=. }} 5. ^HD 137471, database entry, Catalog of Apparent Diameters and Absolute Radii of Stars (CADARS), 3rd edition, L. E. Pasinetti-Fracassini, L. Pastori, S. Covino, and A. Pozzi, CDS ID II/224. Accessed on line September 19, 2008. 8 : Serpens (constellation)|M-type giants|Bayer objects|Flamsteed objects|Henry Draper Catalogue objects|Hipparcos objects|Durchmusterung objects|HR objects |
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