45 Andromedae
Template:Location mark Location of 45 Andromedae (circled) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 5.80[2] |
| Characteristics | |
| Spectral type | B7 III-IV[3] |
| B−V Template:Engvar | Script error: No such module "val".[2] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[4] km/s |
| Proper motion (μ) | RA: −17.558[1] mas/yr Dec.: −18.400[1] mas/yr |
| Parallax (π) | 9.5725±0.0805 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −1.10[2] |
| Details | |
| Radius | 5.2[5] Template:Solar radius |
| Luminosity | 413.92[2] Template:Solar luminosity |
| Temperature | Script error: No such module "val".[6] K |
| Rotational velocity (v sin i) | 60[7] km/s |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[8] | |
| Database references | |
| SIMBAD | data |
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45 Andromedae, abbreviated 45 And, is a double star[9] in the northern constellation Andromeda. 45 Andromedae is the Flamsteed designation. Its combined apparent visual magnitude is 5.80.[2] Based upon an annual parallax shift of Script error: No such module "val".,[1] it is located 341 light years away.
The stellar classification of 45 And is B7 III-IV,[3] matching an evolving subgiant/giant star. It has about 5.2[5] times the Sun's radius and is radiating 414[2] times the Sun's luminosity from its photosphere at an effective temperature of 12,874 K.[6]
This star is most likely single. A companion star was discovered by American astronomer George W. Hough in 1890. As of 2006, the companion was at an angular separation of Script error: No such module "val". along a position angle of 225° from the primary.[9]
References
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- ↑ a b c d e f Template:Cite DR2
- ↑ a b c d e f Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
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- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
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- ↑ Template:Cite simbad
- ↑ a b Script error: No such module "citation/CS1".
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