Epoch J2000.0 Equinox J2000.0
|Right ascension||23h 27m 58.0951s|
|Declination||+6° 22′ 44.372″|
|Apparent magnitude (V)||4.27|
|Spectral type||K1 III|
|U−B color index||+1.00|
|B−V color index||+1.062|
|Radial velocity (Rv)||+6.05 ± 0.19 km/s|
|Proper motion (μ)||RA: -123.83 mas/yr
Dec.: -43.26 mas/yr
|Parallax (π)||20.54 ± 0.80 mas|
|Distance||159 ± 6 ly
(49 ± 2 pc)
Theta Piscium (Theta Psc, θ Piscium, θ Psc) is a star approximately 159 light years away from Earth in the constellation Pisces. It is an orange-red star of the spectral type K1III, meaning it is a normal giant star with a surface temperature of 3,500 to 5,000 kelvins, and is brighter yet cooler than our sun.
In Chinese, 霹靂 (Pī Lì), meaning Thunderbolt, refers to an asterism consisting of refers to an asterism consisting of θ Piscium, β Piscium, γ Piscium, ι Piscium and ω Piscium. Consequently, θ Piscium itself is known as 霹靂三 (Pī Lì sān, English: the Third Star of Thunderbolt.)
- "Simbad Query Result". Simbad. Retrieved September 27, 2007.
- Hekker, S.; et al. (August 2006), "Precise radial velocities of giant stars. I. Stable stars", Astronomy and Astrophysics 454 (3): 943–949, arXiv:astro-ph/0604502, Bibcode:2006A&A...454..943H, doi:10.1051/0004-6361:20064946
- ""Hipparcos Star Catalog Entry"". Retrieved September 27, 2007.
- (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 8 日
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