Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Cassiopeia |
Right ascension | 01h 42m 55.86184s [1] |
Declination | +70° 37′ 21.09002″ [1] |
Apparent magnitude (V) | +5.18 [2] |
Characteristics | |
Evolutionary stage | main sequence [3] |
Spectral type | B9 V [4] |
B−V color index | −0.022±0.002 [2] |
Variable type | suspected β Per [5] |
Astrometry | |
Radial velocity (Rv) | +6.6±2.9 [2] km/s |
Proper motion (μ) |
RA: +76.763
[1]
mas/
yr Dec.: −13.955 [1] mas/ yr |
Parallax (π) | 11.2028 ± 0.1432 mas [1] |
Distance | 291 ± 4
ly (89 ± 1 pc) |
Absolute magnitude (MV) | 0.53 [2] |
Details | |
Mass | 2.68±0.04 [3] M☉ |
Radius | 2.63±0.13 [6] R☉ |
Luminosity | 66.12 [2] L☉ |
Surface gravity (log g) | 3.98±0.04 [6] cgs |
Temperature | 10,141±61 [6] K |
Rotational velocity (v sin i) | 149 [3] km/s |
Age | 67+188 −57 [7] Myr |
Other designations | |
Database references | |
SIMBAD | data |
42 Cassiopeiae is a possible binary star [9] system in the northern circumpolar constellation of Cassiopeia. It is visible to the naked eye as a dim, blue-white hued star with a baseline apparent visual magnitude of +5.18. The system is located approximately 291 light years from the Sun based on parallax, [1] and is drifting further away with a radial velocity of +7 km/s. [2]
This is classified as a suspected eclipsing binary of the Algol type, [5] with a period of 16.77 days and a magnitude decrease of 0.3. [10] The primary is a B-type main-sequence star with a stellar classification of B9V. [4] It is roughly 67 [7] million years old and is spinning with a projected rotational velocity of 149 km/s. [3] The star has 2.7 [3] times the mass of the Sun and 2.6 [6] times the Sun's radius. It is radiating 66 [2] times the luminosity of the Sun from its photosphere at an effective temperature of 10,141 K. [6]
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Cassiopeia |
Right ascension | 01h 42m 55.86184s [1] |
Declination | +70° 37′ 21.09002″ [1] |
Apparent magnitude (V) | +5.18 [2] |
Characteristics | |
Evolutionary stage | main sequence [3] |
Spectral type | B9 V [4] |
B−V color index | −0.022±0.002 [2] |
Variable type | suspected β Per [5] |
Astrometry | |
Radial velocity (Rv) | +6.6±2.9 [2] km/s |
Proper motion (μ) |
RA: +76.763
[1]
mas/
yr Dec.: −13.955 [1] mas/ yr |
Parallax (π) | 11.2028 ± 0.1432 mas [1] |
Distance | 291 ± 4
ly (89 ± 1 pc) |
Absolute magnitude (MV) | 0.53 [2] |
Details | |
Mass | 2.68±0.04 [3] M☉ |
Radius | 2.63±0.13 [6] R☉ |
Luminosity | 66.12 [2] L☉ |
Surface gravity (log g) | 3.98±0.04 [6] cgs |
Temperature | 10,141±61 [6] K |
Rotational velocity (v sin i) | 149 [3] km/s |
Age | 67+188 −57 [7] Myr |
Other designations | |
Database references | |
SIMBAD | data |
42 Cassiopeiae is a possible binary star [9] system in the northern circumpolar constellation of Cassiopeia. It is visible to the naked eye as a dim, blue-white hued star with a baseline apparent visual magnitude of +5.18. The system is located approximately 291 light years from the Sun based on parallax, [1] and is drifting further away with a radial velocity of +7 km/s. [2]
This is classified as a suspected eclipsing binary of the Algol type, [5] with a period of 16.77 days and a magnitude decrease of 0.3. [10] The primary is a B-type main-sequence star with a stellar classification of B9V. [4] It is roughly 67 [7] million years old and is spinning with a projected rotational velocity of 149 km/s. [3] The star has 2.7 [3] times the mass of the Sun and 2.6 [6] times the Sun's radius. It is radiating 66 [2] times the luminosity of the Sun from its photosphere at an effective temperature of 10,141 K. [6]