Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Piscis Austrinus |
Right ascension | 22h 10m 08.78048s [1] |
Declination | −32° 32′ 54.2687″ [1] |
Apparent magnitude (V) | +4.945 [2] |
Characteristics | |
Spectral type | F6 V [3] |
U−B color index | +0.031 [2] |
B−V color index | +0.488 [2] |
Astrometry | |
Proper motion (μ) |
RA: +428.96
[1]
mas/
yr Dec.: +13.35 [1] mas/ yr |
Parallax (π) | 54.71 ± 0.28 mas [1] |
Distance | 59.6 ± 0.3
ly (18.28 ± 0.09 pc) |
Absolute magnitude (MV) | 3.58 [4] |
Details | |
Mass | 1.34±0.13 [5] M☉ |
Radius | 1.45±0.04 [5] R☉ |
Luminosity | 2.82±0.09 [5] L☉ |
Surface gravity (log g) | 4.11 [6] cgs |
Temperature | 6,324 [4] K |
Metallicity [Fe/H] | −0.01 [6] dex |
Rotational velocity (v sin i) | 14.1±0.7 [4] km/s |
Age | 1.3 [7] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Tau Piscis Austrini (τ Piscis Austrini) is a solitary, [9] yellow-white hued star in the southern constellation of Piscis Austrinus. It is visible to the naked eye with an apparent visual magnitude of +4.9. [2] Based upon an annual parallax shift of 54.71 mas as seen from the Earth, [1] the star is located 59.6 light years from the Sun.
This is an F-type main sequence star with a stellar classification of F6 V. [3] It is about 1.3 [7] billion years old with a projected rotational velocity of 14 [4] km/s and exhibits a low level of activity. [10] The star has an estimated 1.34 times the mass of the Sun and 1.45 times the Sun's radius. [5] It is radiating 2.82 [5] times the solar luminosity from its photosphere at an effective temperature of 6,324 K. [4] This star is a candidate for hosting a debris disk, as it displayed an initial near infrared excess that faded with further observations. [11]
In Chinese, 天錢 (Tiān Qián), meaning Celestial Money, refers to an asterism consisting of refers to an asterism consisting of τ Piscis Austrini, 13 Piscis Austrini, θ Piscis Austrini, ι Piscis Austrini and μ Piscis Austrini. Consequently, the Chinese name for τ Piscis Austrini itself is 天錢五 (Tiān Qián wǔ, English: the Fifth Star of Celestial Money.) [12]
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Piscis Austrinus |
Right ascension | 22h 10m 08.78048s [1] |
Declination | −32° 32′ 54.2687″ [1] |
Apparent magnitude (V) | +4.945 [2] |
Characteristics | |
Spectral type | F6 V [3] |
U−B color index | +0.031 [2] |
B−V color index | +0.488 [2] |
Astrometry | |
Proper motion (μ) |
RA: +428.96
[1]
mas/
yr Dec.: +13.35 [1] mas/ yr |
Parallax (π) | 54.71 ± 0.28 mas [1] |
Distance | 59.6 ± 0.3
ly (18.28 ± 0.09 pc) |
Absolute magnitude (MV) | 3.58 [4] |
Details | |
Mass | 1.34±0.13 [5] M☉ |
Radius | 1.45±0.04 [5] R☉ |
Luminosity | 2.82±0.09 [5] L☉ |
Surface gravity (log g) | 4.11 [6] cgs |
Temperature | 6,324 [4] K |
Metallicity [Fe/H] | −0.01 [6] dex |
Rotational velocity (v sin i) | 14.1±0.7 [4] km/s |
Age | 1.3 [7] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Tau Piscis Austrini (τ Piscis Austrini) is a solitary, [9] yellow-white hued star in the southern constellation of Piscis Austrinus. It is visible to the naked eye with an apparent visual magnitude of +4.9. [2] Based upon an annual parallax shift of 54.71 mas as seen from the Earth, [1] the star is located 59.6 light years from the Sun.
This is an F-type main sequence star with a stellar classification of F6 V. [3] It is about 1.3 [7] billion years old with a projected rotational velocity of 14 [4] km/s and exhibits a low level of activity. [10] The star has an estimated 1.34 times the mass of the Sun and 1.45 times the Sun's radius. [5] It is radiating 2.82 [5] times the solar luminosity from its photosphere at an effective temperature of 6,324 K. [4] This star is a candidate for hosting a debris disk, as it displayed an initial near infrared excess that faded with further observations. [11]
In Chinese, 天錢 (Tiān Qián), meaning Celestial Money, refers to an asterism consisting of refers to an asterism consisting of τ Piscis Austrini, 13 Piscis Austrini, θ Piscis Austrini, ι Piscis Austrini and μ Piscis Austrini. Consequently, the Chinese name for τ Piscis Austrini itself is 天錢五 (Tiān Qián wǔ, English: the Fifth Star of Celestial Money.) [12]