Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Carina |
Right ascension | 08h 40m 37.02758s [2] |
Declination | −59° 45′ 39.6067″ [2] |
Apparent magnitude (V) | 4.31 [3] |
Characteristics | |
Spectral type | B1.5III [4] |
B−V color index | −0.117±0.005 [3] |
Variable type | Constant [5] |
Astrometry | |
Radial velocity (Rv) | +12.9±0.7 [3] km/s |
Proper motion (μ) |
RA: −6.63
[2]
mas/
yr Dec.: +5.32 [2] mas/ yr |
Parallax (π) | 2.26 ± 0.11 mas [2] |
Distance | 1,440 ± 70
ly (440 ± 20 pc) |
Absolute magnitude (MV) | −3.91 [3] |
Details | |
Mass | 12.5±0.6 [6] M☉ |
Luminosity | 6,322.92 [3] L☉ |
Temperature | 27,600±3,630 [7] K |
Age | 15.7±0.1 [6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
V343 Carinae is a blue-white star or star system in the southern constellation of Carina. It has the Bayer designation d Carinae, while V343 Carinae is a variable star designation. The star is visible to the naked eye with an apparent visual magnitude of 4.31. [3] The distance to this object is approximately 1,440 light years based on parallax. It is drifting further away with a radial velocity of +13 km/s. [3]
This star was originally thought to be a Beta Cephei variable and a suspected eclipsing binary [9] with an orbital period of 133.92 days. It is now considered as probably constant. [10] [5] Measurements indicate that at most it is a microvariable star with an amplitude of 0.0041 in visual magnitude and a period of 0.42029 cycles per day. [11] Eggleton and Tokovinin (2008) catalogued this as a single star, albeit with some uncertainty. [12] However, Chini et al. (2012) listed it as a single-lined spectroscopic binary system. [13]
The visible component of V343 Carinae has a stellar classification of B1.5III, [4] matching a massive blue giant. It has 12.5 [6] times the mass of the Sun and is an estimated 16 [6] million years old. The star is radiating 6,323 [3] times the Sun's luminosity from its photosphere at an effective temperature of 27,600 K. [7] It has a visual magnitude 13.3 companion at an angular separation of 16.4 ″ along a position angle of 339°, as of 2010. [14]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Carina |
Right ascension | 08h 40m 37.02758s [2] |
Declination | −59° 45′ 39.6067″ [2] |
Apparent magnitude (V) | 4.31 [3] |
Characteristics | |
Spectral type | B1.5III [4] |
B−V color index | −0.117±0.005 [3] |
Variable type | Constant [5] |
Astrometry | |
Radial velocity (Rv) | +12.9±0.7 [3] km/s |
Proper motion (μ) |
RA: −6.63
[2]
mas/
yr Dec.: +5.32 [2] mas/ yr |
Parallax (π) | 2.26 ± 0.11 mas [2] |
Distance | 1,440 ± 70
ly (440 ± 20 pc) |
Absolute magnitude (MV) | −3.91 [3] |
Details | |
Mass | 12.5±0.6 [6] M☉ |
Luminosity | 6,322.92 [3] L☉ |
Temperature | 27,600±3,630 [7] K |
Age | 15.7±0.1 [6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
V343 Carinae is a blue-white star or star system in the southern constellation of Carina. It has the Bayer designation d Carinae, while V343 Carinae is a variable star designation. The star is visible to the naked eye with an apparent visual magnitude of 4.31. [3] The distance to this object is approximately 1,440 light years based on parallax. It is drifting further away with a radial velocity of +13 km/s. [3]
This star was originally thought to be a Beta Cephei variable and a suspected eclipsing binary [9] with an orbital period of 133.92 days. It is now considered as probably constant. [10] [5] Measurements indicate that at most it is a microvariable star with an amplitude of 0.0041 in visual magnitude and a period of 0.42029 cycles per day. [11] Eggleton and Tokovinin (2008) catalogued this as a single star, albeit with some uncertainty. [12] However, Chini et al. (2012) listed it as a single-lined spectroscopic binary system. [13]
The visible component of V343 Carinae has a stellar classification of B1.5III, [4] matching a massive blue giant. It has 12.5 [6] times the mass of the Sun and is an estimated 16 [6] million years old. The star is radiating 6,323 [3] times the Sun's luminosity from its photosphere at an effective temperature of 27,600 K. [7] It has a visual magnitude 13.3 companion at an angular separation of 16.4 ″ along a position angle of 339°, as of 2010. [14]