Tau¹ Serpentis

:"For other stars with this Bayer designation, see Tau Serpentis."Starbox begin
name = τ¹ SerpentisStarbox observe
epoch = J2000.0
equinox = J2000.0 (ICRS)
constell = Serpens
ra = RA|15|25|47.3967SIMBAD link|tau1+ser|NSV 7074 -- Variable Star, database entry, SIMBAD. Accessed on line September 19, 2008.]
dec = DEC|+15|25|40.930
appmag_v=5.13 to 5.20NSV 7074, database entry, [http://www.sai.msu.su/groups/cluster/gcvs/gcvs/nsv/nsv.dat New Catalogue of Suspected Variable Stars, the improved version] , Sternberg Astronomical Institute, Moscow, Russia. Accessed on line September 19, 2008.] Starbox character
class = M1III
u-b = +1.95 [http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=V/50/catalog&recno=5739 HR 5739] , database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID [http://vizier.u-strasbg.fr/viz-bin/Cat?V/50 V/50] . Accessed on line September 19, 2008.]
b-v = +1.66
r-i = +1.04Starbox astrometry
radial_v = −19.8 ± 0.9
prop_mo_ra = −14.02
prop_mo_dec = −7.51
parallax = 3.55
p_error = 0.76
parallax_footnote =
absmag_v= −2.1 [From apparent magnitude and parallax.] Starbox detail
radius = 54 [http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=II/224/cadars.dat&recno=6727 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 [http://vizier.u-strasbg.fr/viz-bin/Cat?II/224 II/224] . Accessed on line September 19, 2008.] Starbox catalog
names=τ¹ Ser, Tau¹ Serpentis, Tau¹ Ser, 9 Serpentis, 9 Ser, BD+15 2858, FK5 570, GC 20740, HD 137471, HIP 75530, HR 5739, PPM 131392, SAO 101545.Starbox reference
Simbad=tau1+ser

Tau¹ Serpentis (Tau¹ Ser / τ¹ Serpentis / τ¹ Ser) is a M-type giant star in the constellation of Serpens, approximately 900 light-years from Earth. It has an apparent visual magnitude which varies between 5.13 and 5.20.

References