Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Phoenix |
Right ascension | 00h 45m 45.5930s [1] |
Declination | –47° 33′ 07.1438″ [1] |
Apparent magnitude (V) | 5.80 [2] |
Characteristics | |
Spectral type | G3V [3] |
B−V color index | +0.64 [2] |
Astrometry | |
Radial velocity (Rv) | –11.4 [4] km/s |
Proper motion (μ) |
RA: 183.99
[1]
mas/
yr Dec.: 78.81 [1] mas/ yr |
Parallax (π) | 65.97 ± 0.39 mas [1] |
Distance | 49.4 ± 0.3
ly (15.16 ± 0.09 pc) |
Details | |
Mass | 1.22 ± 0.04 [5] M☉ |
Surface gravity (log g) | 4.85 [5] cgs |
Temperature | 5,955 [5] K |
Metallicity [Fe/H] | 0.01 [5] dex |
Rotation | 12 days [6] |
Rotational velocity (v sin i) | 3.5 [3] km/s |
Age | 1.2 [6] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HD 4391 is a triple star system [8] in the constellation Phoenix that is located at a distance of 48.7 light years from the Sun. The primary has a stellar classification of G3V, which is a G-type main sequence star. The physical properties of this star are similar to the Sun, making it a solar analog. However, it is believed to have 22% greater mass than the Sun and is only 1.2 billion years old. [5] The spectrum for this star displays an abnormally low level of beryllium, which may be the result of some form of mixing process. [6]
No planet has been detected in orbit around this star, [5] nor does it emit a statistically significant excess of infrared radiation that might indicate a debris disk. [9] However, it has two companions that share a common proper motion through space with HD 4391, effectively making it a triple star system. The first, a red dwarf of type M4, lies at an angular separation of 17″ from the primary. The second is a type M5 star at a separation of 49″. [8]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Phoenix |
Right ascension | 00h 45m 45.5930s [1] |
Declination | –47° 33′ 07.1438″ [1] |
Apparent magnitude (V) | 5.80 [2] |
Characteristics | |
Spectral type | G3V [3] |
B−V color index | +0.64 [2] |
Astrometry | |
Radial velocity (Rv) | –11.4 [4] km/s |
Proper motion (μ) |
RA: 183.99
[1]
mas/
yr Dec.: 78.81 [1] mas/ yr |
Parallax (π) | 65.97 ± 0.39 mas [1] |
Distance | 49.4 ± 0.3
ly (15.16 ± 0.09 pc) |
Details | |
Mass | 1.22 ± 0.04 [5] M☉ |
Surface gravity (log g) | 4.85 [5] cgs |
Temperature | 5,955 [5] K |
Metallicity [Fe/H] | 0.01 [5] dex |
Rotation | 12 days [6] |
Rotational velocity (v sin i) | 3.5 [3] km/s |
Age | 1.2 [6] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HD 4391 is a triple star system [8] in the constellation Phoenix that is located at a distance of 48.7 light years from the Sun. The primary has a stellar classification of G3V, which is a G-type main sequence star. The physical properties of this star are similar to the Sun, making it a solar analog. However, it is believed to have 22% greater mass than the Sun and is only 1.2 billion years old. [5] The spectrum for this star displays an abnormally low level of beryllium, which may be the result of some form of mixing process. [6]
No planet has been detected in orbit around this star, [5] nor does it emit a statistically significant excess of infrared radiation that might indicate a debris disk. [9] However, it has two companions that share a common proper motion through space with HD 4391, effectively making it a triple star system. The first, a red dwarf of type M4, lies at an angular separation of 17″ from the primary. The second is a type M5 star at a separation of 49″. [8]