Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Canis Major |
Right ascension | 07h 22m 00.98686s [2] |
Declination | −25° 52′ 35.9276″ [2] |
Apparent magnitude (V) | 9.89 (-10.14) - 10.42 [3] |
Characteristics | |
Evolutionary stage | B5V [4] |
Variable type | Algol [3] |
Astrometry | |
Proper motion (μ) |
RA: −2.656
[2]
mas/
yr Dec.: 2.777 [2] mas/ yr |
Parallax (π) | 0.7147 ± 0.0586 mas [2] |
Distance | 4,600 ± 400
ly (1,400 ± 100 pc) |
Details | |
A | |
Mass | 5.9 [5] M☉ |
Temperature | 15,200 [5] K |
B | |
Mass | 3.4 [5] M☉ |
Temperature | 10,600 [5] K |
Other designations | |
Database references | |
SIMBAD | data |
CX CMa (CX Canis Majoris) is a blue variable star in the Canis Major constellation. [6] [7] Discovery of this variable is usually credited to German Astronomer Cuno Hoffmeister in 1931, although this remains uncertain. [8]
It is an eclipsing binary of Algol ( detached) [3] whose magnitude varies between 9.9 and 10.4 with a period of 0.95462500 day (22.911000 hour). [7] The variability was first discovered in 1931. [9] Doubts arose because of scatter in the data and the small amplitude, [10] but the discovery was confirmed by 1949. [11] Its Algol-type light curve exhibits the O'Connell effect, meaning that there is a magnitude difference between subsequent maxima. [12]
The temperature of the secondary star has been estimated at 10,600 K and its mass at 3.4 M☉. The spectral type of the secondary star is estimated to be in the B8 to A0 range. [13]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Canis Major |
Right ascension | 07h 22m 00.98686s [2] |
Declination | −25° 52′ 35.9276″ [2] |
Apparent magnitude (V) | 9.89 (-10.14) - 10.42 [3] |
Characteristics | |
Evolutionary stage | B5V [4] |
Variable type | Algol [3] |
Astrometry | |
Proper motion (μ) |
RA: −2.656
[2]
mas/
yr Dec.: 2.777 [2] mas/ yr |
Parallax (π) | 0.7147 ± 0.0586 mas [2] |
Distance | 4,600 ± 400
ly (1,400 ± 100 pc) |
Details | |
A | |
Mass | 5.9 [5] M☉ |
Temperature | 15,200 [5] K |
B | |
Mass | 3.4 [5] M☉ |
Temperature | 10,600 [5] K |
Other designations | |
Database references | |
SIMBAD | data |
CX CMa (CX Canis Majoris) is a blue variable star in the Canis Major constellation. [6] [7] Discovery of this variable is usually credited to German Astronomer Cuno Hoffmeister in 1931, although this remains uncertain. [8]
It is an eclipsing binary of Algol ( detached) [3] whose magnitude varies between 9.9 and 10.4 with a period of 0.95462500 day (22.911000 hour). [7] The variability was first discovered in 1931. [9] Doubts arose because of scatter in the data and the small amplitude, [10] but the discovery was confirmed by 1949. [11] Its Algol-type light curve exhibits the O'Connell effect, meaning that there is a magnitude difference between subsequent maxima. [12]
The temperature of the secondary star has been estimated at 10,600 K and its mass at 3.4 M☉. The spectral type of the secondary star is estimated to be in the B8 to A0 range. [13]