Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Vela |
Right ascension | 09h 11m 04.39802s [1] |
Declination | −44° 52′ 04.4411″ [1] |
Apparent magnitude (V) | +4.99 [2] (4.97 to 5.04) [3] |
Characteristics | |
Spectral type | B5 Ia [4] |
U−B color index | −0.57 [5] |
B−V color index | +0.22 [5] |
Variable type | α Cyg? [3] |
Astrometry | |
Radial velocity (Rv) | +28.2±0.8 [6] km/s |
Proper motion (μ) |
RA: −5.608
[1]
mas/
yr Dec.: +3.843 [1] mas/ yr |
Parallax (π) | 0.7696 ± 0.1585 mas [1] |
Distance | approx. 4,200
ly (approx. 1,300 pc) |
Absolute magnitude (MV) | −7.20 [7] |
Details [8] | |
Mass | 35 M☉ |
Radius | 61±7 [9] R☉ |
Luminosity | 214,000 [9] L☉ |
Surface gravity (log g) | 2.12±0.05 [9] cgs |
Temperature | 15,000±150 [9] K |
Rotational velocity (v sin i) | 39 km/s |
Age | 8.3 [10] Myr |
Other designations | |
Database references | |
SIMBAD | data |
GX Velorum is a solitary [12] variable star [3] in the southern constellation of Vela. It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude that fluctuates around 4.99. [2] Based upon parallax measurements, it is located approximately 4,200 light years distant from the Sun, and is drifting further away with a radial velocity of +28 km/s. [6] It may be a member of the Vela OB1 association of co-moving stars. [7]
This object is a massive blue supergiant with a stellar classification of B5 Ia. [4] It is suspected to be an Alpha Cygni-type pulsating variable and ranges in brightness from 4.97 down to 5.04 magnitude. [3] It is losing mass at the rate of (0.40±0.02)×10−6 M☉ yr−1, [9] or one solar mass every 2.5 million years. The star is 8.3 [10] million years old with 35 times the mass of the Sun. [8] It has expanded to around 61 [9] times the Sun's radius and is radiating 214,000 [9] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 15,000 K. [9]
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Vela |
Right ascension | 09h 11m 04.39802s [1] |
Declination | −44° 52′ 04.4411″ [1] |
Apparent magnitude (V) | +4.99 [2] (4.97 to 5.04) [3] |
Characteristics | |
Spectral type | B5 Ia [4] |
U−B color index | −0.57 [5] |
B−V color index | +0.22 [5] |
Variable type | α Cyg? [3] |
Astrometry | |
Radial velocity (Rv) | +28.2±0.8 [6] km/s |
Proper motion (μ) |
RA: −5.608
[1]
mas/
yr Dec.: +3.843 [1] mas/ yr |
Parallax (π) | 0.7696 ± 0.1585 mas [1] |
Distance | approx. 4,200
ly (approx. 1,300 pc) |
Absolute magnitude (MV) | −7.20 [7] |
Details [8] | |
Mass | 35 M☉ |
Radius | 61±7 [9] R☉ |
Luminosity | 214,000 [9] L☉ |
Surface gravity (log g) | 2.12±0.05 [9] cgs |
Temperature | 15,000±150 [9] K |
Rotational velocity (v sin i) | 39 km/s |
Age | 8.3 [10] Myr |
Other designations | |
Database references | |
SIMBAD | data |
GX Velorum is a solitary [12] variable star [3] in the southern constellation of Vela. It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude that fluctuates around 4.99. [2] Based upon parallax measurements, it is located approximately 4,200 light years distant from the Sun, and is drifting further away with a radial velocity of +28 km/s. [6] It may be a member of the Vela OB1 association of co-moving stars. [7]
This object is a massive blue supergiant with a stellar classification of B5 Ia. [4] It is suspected to be an Alpha Cygni-type pulsating variable and ranges in brightness from 4.97 down to 5.04 magnitude. [3] It is losing mass at the rate of (0.40±0.02)×10−6 M☉ yr−1, [9] or one solar mass every 2.5 million years. The star is 8.3 [10] million years old with 35 times the mass of the Sun. [8] It has expanded to around 61 [9] times the Sun's radius and is radiating 214,000 [9] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 15,000 K. [9]