Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cassiopeia |
Right ascension | 01h 04m 19.451s [1] |
Declination | +61° 34′ 48.66″ [1] |
Apparent magnitude (V) | 5.84 [2] |
Characteristics | |
Evolutionary stage | Main sequence |
Spectral type | F6V [3] |
U−B color index | +0.11 [2] |
B−V color index | +0.56 [2] |
Astrometry | |
Radial velocity (Rv) | −20.40 [4] km/s |
Proper motion (μ) |
RA: −79.837
mas/
yr
[1] Dec.: −24.915 mas/ yr [1] |
Parallax (π) | 12.7218 ± 0.0301 mas [1] |
Distance | 256.4 ± 0.6
ly (78.6 ± 0.2 pc) |
Absolute magnitude (MV) | 1.30 [5] |
Details | |
Mass | 1.953 [3] M☉ |
Radius | 4.52±0.15 [3] R☉ |
Luminosity | 25.16±1.59 [3] L☉ |
Surface gravity (log g) | 3.86 [6] cgs |
Temperature | 6,089±35 [3] K |
Metallicity [Fe/H] | −0.01 [3] dex |
Rotational velocity (v sin i) | 42.0 [7] km/s |
Age | 1.3 [3] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HR 297 is a solitary star in the northern circumpolar constellation of Cassiopeia. It has an apparent visual magnitude of 5.8, [2] making it faintly visible to the naked eye from dark suburban skies. Parallax measurements put this system at a distance of roughly 256 light years. [1] It is drifting closer with a heliocentric radial velocity of −20.4 km/s. [4]
This is an F-type main sequence star with a stellar classification of F7V. [3] Because of the stability of this star, it is used as a standard in the photometric WBVR system. [9] The angular diameter of this star has been measured directly using the CHARA Array, yielding an estimate of 4.5 times the diameter of the Sun. Stellar models suggest a mass equal to about twice that of the Sun, with 25 times the Sun's luminosity. [3]
This is a young star with an estimated age of 1.3 billion years. [10] It is rotating rapidly, with a projected rotational velocity of 42 km/s. [7] The abundance of elements other than hydrogen and helium is about the same as that in the Sun. The effective temperature of the stellar atmosphere is 6,089 K, [3] giving it the yellow-white hued glow of an F-type star. [10]
This star has been examined for the presence of an infrared excess, but no statistically significant amount was detected. The detection of such an excess can indicate the presence of a dusty circumstellar disk. [11]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cassiopeia |
Right ascension | 01h 04m 19.451s [1] |
Declination | +61° 34′ 48.66″ [1] |
Apparent magnitude (V) | 5.84 [2] |
Characteristics | |
Evolutionary stage | Main sequence |
Spectral type | F6V [3] |
U−B color index | +0.11 [2] |
B−V color index | +0.56 [2] |
Astrometry | |
Radial velocity (Rv) | −20.40 [4] km/s |
Proper motion (μ) |
RA: −79.837
mas/
yr
[1] Dec.: −24.915 mas/ yr [1] |
Parallax (π) | 12.7218 ± 0.0301 mas [1] |
Distance | 256.4 ± 0.6
ly (78.6 ± 0.2 pc) |
Absolute magnitude (MV) | 1.30 [5] |
Details | |
Mass | 1.953 [3] M☉ |
Radius | 4.52±0.15 [3] R☉ |
Luminosity | 25.16±1.59 [3] L☉ |
Surface gravity (log g) | 3.86 [6] cgs |
Temperature | 6,089±35 [3] K |
Metallicity [Fe/H] | −0.01 [3] dex |
Rotational velocity (v sin i) | 42.0 [7] km/s |
Age | 1.3 [3] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HR 297 is a solitary star in the northern circumpolar constellation of Cassiopeia. It has an apparent visual magnitude of 5.8, [2] making it faintly visible to the naked eye from dark suburban skies. Parallax measurements put this system at a distance of roughly 256 light years. [1] It is drifting closer with a heliocentric radial velocity of −20.4 km/s. [4]
This is an F-type main sequence star with a stellar classification of F7V. [3] Because of the stability of this star, it is used as a standard in the photometric WBVR system. [9] The angular diameter of this star has been measured directly using the CHARA Array, yielding an estimate of 4.5 times the diameter of the Sun. Stellar models suggest a mass equal to about twice that of the Sun, with 25 times the Sun's luminosity. [3]
This is a young star with an estimated age of 1.3 billion years. [10] It is rotating rapidly, with a projected rotational velocity of 42 km/s. [7] The abundance of elements other than hydrogen and helium is about the same as that in the Sun. The effective temperature of the stellar atmosphere is 6,089 K, [3] giving it the yellow-white hued glow of an F-type star. [10]
This star has been examined for the presence of an infrared excess, but no statistically significant amount was detected. The detection of such an excess can indicate the presence of a dusty circumstellar disk. [11]