Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Auriga |
Right ascension | 05h 03m 18.63675s [1] |
Declination | +41° 26′ 29.9355″ [1] |
Apparent magnitude (V) | 6.08 [2] |
Characteristics | |
Spectral type | A2IIIshe [3] |
U−B color index | +0.22 [2] |
B−V color index | +0.21 [2] |
Variable type | Suspected [4] |
Astrometry | |
Radial velocity (Rv) | −0.7 [5] km/s |
Proper motion (μ) |
RA: −0.44
[6]
mas/
yr Dec.: −1.89 [6] mas/ yr |
Parallax (π) | 1.0886 ± 0.0733 mas [1] |
Distance | 3,000 ± 200
ly (920 ± 60 pc) |
Absolute magnitude (MV) | −2.87 [3] |
Details | |
Radius | 30.39+1.63 −0.99 [1] R☉ |
Luminosity | 2,428±207 [1] L☉ |
Temperature | 7,350+123 −189 [1] K |
Rotational velocity (v sin i) | 23 [7] km/s |
Other designations | |
Database references | |
SIMBAD | data |
HD 32188 is suspected variable star [4] in the northern constellation of Auriga, and is positioned roughly in between Eta and Zeta Aurigae. It has a white hue and is just barely visible to the naked eye with an apparent visual magnitude that fluctuates around 6.08. [2] The distance to this star is approximately 3,000 light years, based on parallax. [1] It has an absolute magnitude of −2.87. [3]
This object is an A-type giant star with a stellar classification of A2IIIshe. [3] The suffix notation indicates this is a shell star, [9] which means it has a peculiar spectrum indicating there is a circumstellar disk of gas around the star's equator. While the spectral luminosity class is III, analysis of its colour and brightness suggest it more closely resembles a supergiant star. [3] HD 32188 has expanded to 30 [1] times the radius of the Sun and it is spinning with a projected rotational velocity of 23 km/s. [7] It is radiating 2,428 [1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 7,350 K. [1]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Auriga |
Right ascension | 05h 03m 18.63675s [1] |
Declination | +41° 26′ 29.9355″ [1] |
Apparent magnitude (V) | 6.08 [2] |
Characteristics | |
Spectral type | A2IIIshe [3] |
U−B color index | +0.22 [2] |
B−V color index | +0.21 [2] |
Variable type | Suspected [4] |
Astrometry | |
Radial velocity (Rv) | −0.7 [5] km/s |
Proper motion (μ) |
RA: −0.44
[6]
mas/
yr Dec.: −1.89 [6] mas/ yr |
Parallax (π) | 1.0886 ± 0.0733 mas [1] |
Distance | 3,000 ± 200
ly (920 ± 60 pc) |
Absolute magnitude (MV) | −2.87 [3] |
Details | |
Radius | 30.39+1.63 −0.99 [1] R☉ |
Luminosity | 2,428±207 [1] L☉ |
Temperature | 7,350+123 −189 [1] K |
Rotational velocity (v sin i) | 23 [7] km/s |
Other designations | |
Database references | |
SIMBAD | data |
HD 32188 is suspected variable star [4] in the northern constellation of Auriga, and is positioned roughly in between Eta and Zeta Aurigae. It has a white hue and is just barely visible to the naked eye with an apparent visual magnitude that fluctuates around 6.08. [2] The distance to this star is approximately 3,000 light years, based on parallax. [1] It has an absolute magnitude of −2.87. [3]
This object is an A-type giant star with a stellar classification of A2IIIshe. [3] The suffix notation indicates this is a shell star, [9] which means it has a peculiar spectrum indicating there is a circumstellar disk of gas around the star's equator. While the spectral luminosity class is III, analysis of its colour and brightness suggest it more closely resembles a supergiant star. [3] HD 32188 has expanded to 30 [1] times the radius of the Sun and it is spinning with a projected rotational velocity of 23 km/s. [7] It is radiating 2,428 [1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 7,350 K. [1]