Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Pisces |
Right ascension | 01h 12m 35.0519s [1] |
Declination | 17° 03′ 55.5712″ [1] |
Apparent magnitude (V) | 12.96 - 13.24 |
Characteristics | |
Spectral type | M3 [2] |
Astrometry | |
Radial velocity (Rv) | −1.5±0.5 [3] km/s |
Proper motion (μ) |
RA: 96.642±0.127
[1]
mas/
yr Dec.: −100.704±0.107 [1] mas/ yr |
Parallax (π) | 21.0019 ± 0.0721 mas [1] |
Distance | 155.3 ± 0.5
ly (47.6 ± 0.2 pc) |
Details | |
Radius | 0.54±0.04 [4] R☉ |
Surface gravity (log g) | 4.75±0.07 [4] cgs |
Temperature | 3250±32 [4] K |
Metallicity | −0.25±0.19 [4] |
Rotational velocity (v sin i) | 23.7±2.2 [3] km/s |
Other designations | |
Database references | |
SIMBAD | data |
GU Piscium is a star in the constellation Pisces. [5] An RS Canum Venaticorum variable, it ranges from magnitude 12.96 to 13.24 over 1.04 days. [6] It is 48 Parsecs (155 light-years) distant from Earth. [7] This star is also believed to be a member of the AB Doradus moving group with a membership probability of 96.9%. [8]
In 2014, it was found to have a gas giant planet— GU Piscium b—orbiting it. [7]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | 9–13 MJ MJ | 2000 | 163,000 | — | — | — |
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Pisces |
Right ascension | 01h 12m 35.0519s [1] |
Declination | 17° 03′ 55.5712″ [1] |
Apparent magnitude (V) | 12.96 - 13.24 |
Characteristics | |
Spectral type | M3 [2] |
Astrometry | |
Radial velocity (Rv) | −1.5±0.5 [3] km/s |
Proper motion (μ) |
RA: 96.642±0.127
[1]
mas/
yr Dec.: −100.704±0.107 [1] mas/ yr |
Parallax (π) | 21.0019 ± 0.0721 mas [1] |
Distance | 155.3 ± 0.5
ly (47.6 ± 0.2 pc) |
Details | |
Radius | 0.54±0.04 [4] R☉ |
Surface gravity (log g) | 4.75±0.07 [4] cgs |
Temperature | 3250±32 [4] K |
Metallicity | −0.25±0.19 [4] |
Rotational velocity (v sin i) | 23.7±2.2 [3] km/s |
Other designations | |
Database references | |
SIMBAD | data |
GU Piscium is a star in the constellation Pisces. [5] An RS Canum Venaticorum variable, it ranges from magnitude 12.96 to 13.24 over 1.04 days. [6] It is 48 Parsecs (155 light-years) distant from Earth. [7] This star is also believed to be a member of the AB Doradus moving group with a membership probability of 96.9%. [8]
In 2014, it was found to have a gas giant planet— GU Piscium b—orbiting it. [7]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | 9–13 MJ MJ | 2000 | 163,000 | — | — | — |