Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Pisces |
Right ascension | 01h 07m 57.16387s [1] |
Declination | +20° 44′ 20.8310″ [1] |
Apparent magnitude (V) | +5.56 [2] |
Characteristics | |
Spectral type | A3 V [3] |
B−V color index | +0.12 [2] |
Astrometry | |
Radial velocity (Rv) | −15.2±0.9 [4] km/s |
Proper motion (μ) |
RA: +86.72
[1]
mas/
yr Dec.: −82.75 [1] mas/ yr |
Parallax (π) | 21.14 ± 0.77 mas [1] |
Distance | 154 ± 6
ly (47 ± 2 pc) |
Absolute magnitude (MV) | +2.19 [5] |
Details | |
Mass | 1.82 [6] M☉ |
Radius | 2.0 [7] R☉ |
Luminosity | 13 [3] L☉ |
Surface gravity (log g) | 4.36±0.14 [6] cgs |
Temperature | 8,611±293 [6] K |
Rotational velocity (v sin i) | 149 [3] km/s |
Age | 250 [6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Psi2 Piscium (ψ2 Piscium) is a white-hued star in the zodiac constellation of Pisces. It is faintly visible to the naked eye, having an apparent visual magnitude of +5.56. [2] Based upon an annual parallax shift of 8.66 mas as seen from Earth, [1] it is located about 380 light years from the Sun. It has a peculiar velocity of 14.6±2.9 km/s, indicating it is a runaway star. [9]
This is a suspected binary star system, [10] with a companion star at an angular separation of 0.357±0.002 arc seconds along a position angle of 174.99°±0.30° from the primary, as of 2008. This corresponds to a projected separation of 16.88±0.62 AU. [11] The brighter component is an A-type main sequence star with a stellar classification of A3 V. [3] The system is a source of X-ray emission with a luminosity of 143.9×1020 W, which is most likely originating from the cooler companion since A-type main sequence stars are not expected to be magnetically active. [12]
{{
cite web}}
: CS1 maint: postscript (
link)
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Pisces |
Right ascension | 01h 07m 57.16387s [1] |
Declination | +20° 44′ 20.8310″ [1] |
Apparent magnitude (V) | +5.56 [2] |
Characteristics | |
Spectral type | A3 V [3] |
B−V color index | +0.12 [2] |
Astrometry | |
Radial velocity (Rv) | −15.2±0.9 [4] km/s |
Proper motion (μ) |
RA: +86.72
[1]
mas/
yr Dec.: −82.75 [1] mas/ yr |
Parallax (π) | 21.14 ± 0.77 mas [1] |
Distance | 154 ± 6
ly (47 ± 2 pc) |
Absolute magnitude (MV) | +2.19 [5] |
Details | |
Mass | 1.82 [6] M☉ |
Radius | 2.0 [7] R☉ |
Luminosity | 13 [3] L☉ |
Surface gravity (log g) | 4.36±0.14 [6] cgs |
Temperature | 8,611±293 [6] K |
Rotational velocity (v sin i) | 149 [3] km/s |
Age | 250 [6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Psi2 Piscium (ψ2 Piscium) is a white-hued star in the zodiac constellation of Pisces. It is faintly visible to the naked eye, having an apparent visual magnitude of +5.56. [2] Based upon an annual parallax shift of 8.66 mas as seen from Earth, [1] it is located about 380 light years from the Sun. It has a peculiar velocity of 14.6±2.9 km/s, indicating it is a runaway star. [9]
This is a suspected binary star system, [10] with a companion star at an angular separation of 0.357±0.002 arc seconds along a position angle of 174.99°±0.30° from the primary, as of 2008. This corresponds to a projected separation of 16.88±0.62 AU. [11] The brighter component is an A-type main sequence star with a stellar classification of A3 V. [3] The system is a source of X-ray emission with a luminosity of 143.9×1020 W, which is most likely originating from the cooler companion since A-type main sequence stars are not expected to be magnetically active. [12]
{{
cite web}}
: CS1 maint: postscript (
link)