Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Vela |
Right ascension | 10h 14m 14 44.1579s [1] |
Declination | −42° 07′ 18.9852″ [1] |
Apparent magnitude (V) | 3.85 [2] |
Characteristics | |
Spectral type | A2 V [2] |
B−V color index | +0.051±0.005 [3] |
Astrometry | |
Radial velocity (Rv) | +7.4±2.7 [4] km/s |
Proper motion (μ) |
RA: −151.532
[1]
mas/
yr Dec.: +49.171 [1] mas/ yr |
Parallax (π) | 32.7054 ± 0.3218 mas [1] |
Distance | 99.7 ± 1.0
ly (30.6 ± 0.3 pc) |
Absolute magnitude (MV) | 1.39 [3] |
Details | |
Mass | 2.17 [5] M☉ |
Radius | 2.11 [5] R☉ |
Luminosity | 23.24 [5] L☉ |
Surface gravity (log g) | 4.08±0.14 [6] cgs |
Temperature | 9,451±321 [6] K |
Metallicity [Fe/H] | −0.02 [7] dex |
Rotational velocity (v sin i) | 100±4 [8] km/s |
Age | 410 [5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 88955 is a single, [10] white-hued star in the southern constellation of Vela. It can be viewed with the naked eye, having an apparent visual magnitude of 3.85. [2] The distance to HD 88955 can be determined from its annual parallax shift of 32.7 mas, [1] which yields a separation of 100 light years from the Sun. It is moving further from the Earth with a heliocentric radial velocity of +7 km/s. [4] Bayesian analysis suggests HD 88955 is a member of the Argus Association, [11] a group of co-moving stars usually associated with the IC 2391 open cluster.
This is an A-type main-sequence star with a stellar classification of A2 V. [2] It is about 410 [5] million years old with a projected rotational velocity of 100 km/s. [8] The star has 2.17 [5] times the mass of the Sun and 2.11 [5] times the Sun's radius. It is radiating 23 [5] times the Sun's luminosity from its photosphere at an effective temperature of 9,451 K. [6] An infrared excess has been detected from HD 88955, which analysis suggests is a (3.6±3.0)×10−7 M🜨 debris disc with a mean temperature of 138±21 K orbiting the host star at an average distance of 19.3±5.7 AU. [12]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Vela |
Right ascension | 10h 14m 14 44.1579s [1] |
Declination | −42° 07′ 18.9852″ [1] |
Apparent magnitude (V) | 3.85 [2] |
Characteristics | |
Spectral type | A2 V [2] |
B−V color index | +0.051±0.005 [3] |
Astrometry | |
Radial velocity (Rv) | +7.4±2.7 [4] km/s |
Proper motion (μ) |
RA: −151.532
[1]
mas/
yr Dec.: +49.171 [1] mas/ yr |
Parallax (π) | 32.7054 ± 0.3218 mas [1] |
Distance | 99.7 ± 1.0
ly (30.6 ± 0.3 pc) |
Absolute magnitude (MV) | 1.39 [3] |
Details | |
Mass | 2.17 [5] M☉ |
Radius | 2.11 [5] R☉ |
Luminosity | 23.24 [5] L☉ |
Surface gravity (log g) | 4.08±0.14 [6] cgs |
Temperature | 9,451±321 [6] K |
Metallicity [Fe/H] | −0.02 [7] dex |
Rotational velocity (v sin i) | 100±4 [8] km/s |
Age | 410 [5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 88955 is a single, [10] white-hued star in the southern constellation of Vela. It can be viewed with the naked eye, having an apparent visual magnitude of 3.85. [2] The distance to HD 88955 can be determined from its annual parallax shift of 32.7 mas, [1] which yields a separation of 100 light years from the Sun. It is moving further from the Earth with a heliocentric radial velocity of +7 km/s. [4] Bayesian analysis suggests HD 88955 is a member of the Argus Association, [11] a group of co-moving stars usually associated with the IC 2391 open cluster.
This is an A-type main-sequence star with a stellar classification of A2 V. [2] It is about 410 [5] million years old with a projected rotational velocity of 100 km/s. [8] The star has 2.17 [5] times the mass of the Sun and 2.11 [5] times the Sun's radius. It is radiating 23 [5] times the Sun's luminosity from its photosphere at an effective temperature of 9,451 K. [6] An infrared excess has been detected from HD 88955, which analysis suggests is a (3.6±3.0)×10−7 M🜨 debris disc with a mean temperature of 138±21 K orbiting the host star at an average distance of 19.3±5.7 AU. [12]