HD 32188
Template:Location mark Location of HD 32188 (circled) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 6.08[3] |
| Characteristics | |
| Spectral type | A2IIIshe[4] |
| U−B Template:Engvar | +0.22[3] |
| B−V Template:Engvar | +0.21[3] |
| Variable type | Suspected[5] |
| Astrometry | |
| Radial velocity (Rv) | −0.7[6] km/s |
| Proper motion (μ) | RA: −0.227[2] mas/yr Dec.: −1.820[2] mas/yr |
| Parallax (π) | 1.0065±0.0294 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −2.87[4] |
| Details | |
| Mass | 3.1[7] Template:Solar mass |
| Radius | 40[2] Template:Solar radius |
| Luminosity | 5,370[8] Template:Solar luminosity |
| Surface gravity (log g) | [7] cgs |
| Temperature | 8,665[7] K |
| Rotation | 0.41 days[8] |
| Rotational velocity (v sin i) | 23[9] km/s |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[10] | |
| Database references | |
| SIMBAD | data |
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HD 32188 is suspected variable star[5] 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.[3] The distance to this star is approximately 3,240 light years, based on parallax.[2] It has an absolute magnitude of −2.87.[4]
This object is an A-type giant star with a stellar classification of A2IIIshe.[4] The suffix notation indicates this is a shell star,[11] 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.[4] HD 32188 has expanded to 40 times the radius of the Sun[2] and it is spinning with a projected rotational velocity of 23 km/s.[9] It is radiating 5,370 times the luminosity of the Sun[8] from its enlarged photosphere at an effective temperature of Script error: No such module "val"..[7]
References
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- ↑ Template:Cite constellation
- ↑ a b c d e f g h Template:Cite Gaia DR3
- ↑ a b c d Script error: No such module "citation/CS1".
- ↑ a b c d e Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
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- ↑ a b c d Script error: No such module "Citation/CS1".
- ↑ a b c Script error: No such module "Citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
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