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τ⁶ Serpentis
Observation data; Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Serpens
Right ascension	15h 40m 59.1008s
Declination	+16° 01′ 28.517″
Apparent magnitude (V)	6.000
Characteristics
Spectral type	G8III
U−B color index	+0.61
B−V color index	+0.90
R−I color index	+0.46
Astrometry
Radial velocity (Rv)	3.4 ± 0.9 km/s
Proper motion (μ)	RA: 22.16 mas/yr ; Dec.: −16.80 mas/yr
Parallax (π)	7.24 ± 0.79 mas
Distance	approx. 450 ly ; (approx. 140 pc)
Absolute magnitude (MV)	−0.33
Details
Radius	11 R☉
Luminosity	150 L☉
Metallicity [Fe/H]	−0.08±0.04 dex
Other designations
	τ6 Ser, 19 Serpentis, BD+16° 2816, GC 21089, HD 140027, HIP 76810, HR 5840, SAO 101678, PPM 131601 τ6 Ser, Tau6 Serpentis, Tau6 Ser, 19 Serpentis, 19 Ser, BD+16 2816, GC 21089, HD 140027, HIP 76810, HR 5840, PPM 131601, SAO 101678.
Database references
SIMBAD	data

Tau⁶ Serpentis, Latinized from τ⁶ Serpentis, is a G-type giant star in the constellation of Serpens, approximately 450 light-years from the Earth.^[1] It has an apparent visual magnitude of approximately 6.000,^[1] and is a member of the Ursa Major Stream.^[2]

References

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k * 19 Ser -- Star, database entry, SIMBAD. Accessed on line September 19, 2008.
^ ^a ^b ^c ^d HR 5840, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed September 19, 2008.
^ ^a ^b ^c Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
^ HD 140027, 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.