Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Auriga |
Right ascension | 06h 46m 44.3388s [1] |
Declination | +43° 34′ 38.737″ [1] |
Apparent magnitude (V) | 5.25 [2] |
Characteristics | |
Spectral type | G0 V [3] |
U−B color index | +0.06 [2] |
B−V color index | +0.570 [4] |
Astrometry | |
Radial velocity (Rv) | –24 [5] km/s |
Proper motion (μ) |
RA: –1.07
[1]
mas/
yr Dec.: +164.25 [1] mas/ yr |
Parallax (π) | 60.56 ± 0.73 mas [1] |
Distance | 53.9 ± 0.6
ly (16.5 ± 0.2 pc) |
Absolute magnitude (MV) | 4.13 [5] |
Details | |
Mass | 1.079 [6] M☉ |
Radius | 1.18 [6] R☉ |
Surface gravity (log g) | 4.06 [3] cgs |
Temperature | 5,989 [3] K |
Metallicity [Fe/H] | +0.05 [3] dex |
Rotational velocity (v sin i) | 5.03 [4] km/s |
Age | 3.2 [5] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Psi5 Aurigae (ψ5 Aur, ψ5 Aurigae) is a star [8] in the northern constellation of Auriga. It is faintly visible to the naked eye with an apparent visual magnitude of 5.25. [2] Based upon parallax measurements made during the Hipparcos mission, this star is approximately 53.9 light-years (16.5 parsecs) distant from Earth. [1] There is an optical companion [8] which is 36 arcseconds away and has an apparent magnitude of +8.4.
It used to be known to be part of a much bigger constellation named Telescopium Herschelii before it was unrecognized by the International Astronomical Union (IAU).
The spectrum of this star shows it to be a G-type main sequence star with a stellar classification of G0 V. [3] Thought to be around 4 billion years old, it is similar in size, mass, [6] and composition to the Sun, [3] making this a solar analog. It is radiating energy into space at an effective temperature of 5,989 K, [3] giving it the golden-hued glow of a G-type star. [9]
Observation in the infrared shows an excess emission that suggests the presence of a circumstellar disk of dust, known as a debris disk. This material has a mean temperature of 60 K, indicating that it is orbiting at a distance of about 29 astronomical units from the host star. The dust has about half the mass of the Moon and is around 600 million years old. [10] The star is being examined for evidence of extrasolar planets, [11] but none have been found so far.
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Auriga |
Right ascension | 06h 46m 44.3388s [1] |
Declination | +43° 34′ 38.737″ [1] |
Apparent magnitude (V) | 5.25 [2] |
Characteristics | |
Spectral type | G0 V [3] |
U−B color index | +0.06 [2] |
B−V color index | +0.570 [4] |
Astrometry | |
Radial velocity (Rv) | –24 [5] km/s |
Proper motion (μ) |
RA: –1.07
[1]
mas/
yr Dec.: +164.25 [1] mas/ yr |
Parallax (π) | 60.56 ± 0.73 mas [1] |
Distance | 53.9 ± 0.6
ly (16.5 ± 0.2 pc) |
Absolute magnitude (MV) | 4.13 [5] |
Details | |
Mass | 1.079 [6] M☉ |
Radius | 1.18 [6] R☉ |
Surface gravity (log g) | 4.06 [3] cgs |
Temperature | 5,989 [3] K |
Metallicity [Fe/H] | +0.05 [3] dex |
Rotational velocity (v sin i) | 5.03 [4] km/s |
Age | 3.2 [5] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Psi5 Aurigae (ψ5 Aur, ψ5 Aurigae) is a star [8] in the northern constellation of Auriga. It is faintly visible to the naked eye with an apparent visual magnitude of 5.25. [2] Based upon parallax measurements made during the Hipparcos mission, this star is approximately 53.9 light-years (16.5 parsecs) distant from Earth. [1] There is an optical companion [8] which is 36 arcseconds away and has an apparent magnitude of +8.4.
It used to be known to be part of a much bigger constellation named Telescopium Herschelii before it was unrecognized by the International Astronomical Union (IAU).
The spectrum of this star shows it to be a G-type main sequence star with a stellar classification of G0 V. [3] Thought to be around 4 billion years old, it is similar in size, mass, [6] and composition to the Sun, [3] making this a solar analog. It is radiating energy into space at an effective temperature of 5,989 K, [3] giving it the golden-hued glow of a G-type star. [9]
Observation in the infrared shows an excess emission that suggests the presence of a circumstellar disk of dust, known as a debris disk. This material has a mean temperature of 60 K, indicating that it is orbiting at a distance of about 29 astronomical units from the host star. The dust has about half the mass of the Moon and is around 600 million years old. [10] The star is being examined for evidence of extrasolar planets, [11] but none have been found so far.