Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Camelopardalis |
Right ascension | 03h 30m 00.18302s [1] |
Declination | +55° 27′ 06.5158″ [1] |
Apparent magnitude (V) | 5.09 [2] |
Characteristics | |
Spectral type | A1 Va [3] |
B−V color index | 0.022±0.015 [2] |
Astrometry | |
Radial velocity (Rv) | −1.9±0.9 [4] km/s |
Proper motion (μ) |
RA: −46.08
[1]
mas/
yr Dec.: −11.07 [1] mas/ yr |
Parallax (π) | 16.42 ± 0.29 mas [1] |
Distance | 199 ± 4
ly (61 ± 1 pc) |
Absolute magnitude (MV) | 1.17 [2] |
Details | |
Mass | 2.32 [5] M☉ |
Radius | 1.9 [6] R☉ |
Luminosity | 32.16 [2] L☉ |
Surface gravity (log g) | 4.06 [7] cgs |
Temperature | 10,049±342 [7] K |
Rotational velocity (v sin i) | 182 [7] km/s |
Age | 146 [7] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 21447 is a probable binary star [9] system located in the constellation Camelopardalis. The star is also known as HR 1046. It can be viewed with the naked eye, having an apparent visual magnitude of 5.09. [2] Based upon an annual parallax shift of 16.42±0.29 mas, [1] it is located some 199 light years from the Sun. It is a candidate for membership in the Ursa Major Moving Group. [10]
The primary component is A-type main-sequence star with a stellar classification of A1 Va. [3] It is around 146 [7] million years old and is spinning with a projected rotational velocity of 182 km/s. [7] The star has an estimated 2.32 [5] times the mass of the Sun and about 1.9 [6] times the Sun's radius. It is radiating around 32 [2] times the Sun's luminosity from its photosphere at an effective temperature of 10,049 K. [7] The companion is visual magnitude 9.4 star at an angular separation of 14.8 ″. [9]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Camelopardalis |
Right ascension | 03h 30m 00.18302s [1] |
Declination | +55° 27′ 06.5158″ [1] |
Apparent magnitude (V) | 5.09 [2] |
Characteristics | |
Spectral type | A1 Va [3] |
B−V color index | 0.022±0.015 [2] |
Astrometry | |
Radial velocity (Rv) | −1.9±0.9 [4] km/s |
Proper motion (μ) |
RA: −46.08
[1]
mas/
yr Dec.: −11.07 [1] mas/ yr |
Parallax (π) | 16.42 ± 0.29 mas [1] |
Distance | 199 ± 4
ly (61 ± 1 pc) |
Absolute magnitude (MV) | 1.17 [2] |
Details | |
Mass | 2.32 [5] M☉ |
Radius | 1.9 [6] R☉ |
Luminosity | 32.16 [2] L☉ |
Surface gravity (log g) | 4.06 [7] cgs |
Temperature | 10,049±342 [7] K |
Rotational velocity (v sin i) | 182 [7] km/s |
Age | 146 [7] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 21447 is a probable binary star [9] system located in the constellation Camelopardalis. The star is also known as HR 1046. It can be viewed with the naked eye, having an apparent visual magnitude of 5.09. [2] Based upon an annual parallax shift of 16.42±0.29 mas, [1] it is located some 199 light years from the Sun. It is a candidate for membership in the Ursa Major Moving Group. [10]
The primary component is A-type main-sequence star with a stellar classification of A1 Va. [3] It is around 146 [7] million years old and is spinning with a projected rotational velocity of 182 km/s. [7] The star has an estimated 2.32 [5] times the mass of the Sun and about 1.9 [6] times the Sun's radius. It is radiating around 32 [2] times the Sun's luminosity from its photosphere at an effective temperature of 10,049 K. [7] The companion is visual magnitude 9.4 star at an angular separation of 14.8 ″. [9]