13 Andromedae
Template:Location mark Location of 13 Andromedae (circled) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 5.75[2] |
| Characteristics | |
| Spectral type | B9 III or B9 Mn[3] |
| B−V Template:Engvar | Script error: No such module "val".[2] |
| Variable type | α2 CVn[4] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[5] km/s |
| Proper motion (μ) | RA: 87.05[1] mas/yr Dec.: 16.54[1] mas/yr |
| Parallax (π) | 10.87±0.30 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 0.98[6] |
| Details | |
| Luminosity | 42.89[2] Template:Solar luminosity |
| Rotational velocity (v sin i) | 75[7] km/s |
| Age | 345[6] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[8] | |
| Database references | |
| SIMBAD | data |
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13 Andromedae, abbreviated 13 And, is a single,[10] blue-white hued variable star[4] in the northern constellation of Andromeda. 13 Andromedae is the Flamsteed designation, while it bears the variable star designation V388 Andromedae. With a typical apparent visual magnitude of around 5.75,[2] it is dimly visible to the naked eye under good seeing conditions. The distance to this star can be directly estimated from its annual parallax shift of Script error: No such module "val".,[1] yielding a range of 300 light years. At that distance, its brightness is diminished by an extinction of 0.13 magnitude due to interstellar dust.[6] The star is moving closer to the Earth with a heliocentric radial velocity of −8 km/s.[5]
The variability of 13 Andromedae was first detected in Hipparcos satellite data, and it received its variable star designation in 1999.[11][12]
This is a magnetic chemically peculiar star that has been assigned stellar classifications of B9 III or B9 Mn.[3] It is a variable star of the Alpha2 Canum Venaticorum type, ranging in magnitude from 5.73 down to 5.77[4] with a period of 1.47946 days.[3] The star has a high rate of spin, showing a projected rotational velocity of 75 km/s.[7] 13 Andromedae is around 345[6] million years old and shines with 43[2] times the Sun's luminosity.
References
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- ↑ Template:Cite simbad
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