55 Andromedae
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55 Andromedae |
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| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Andromeda |
| Right ascension | 01h 53m 17.3445s |
| Declination | +40° 43′ 47.243″ |
| Apparent magnitude (V) | 5.405 |
| Characteristics | |
| Spectral type | K1III |
| U-B color index | 1.41 |
| B-V color index | 1.32 |
| Astrometry | |
| Radial velocity (Rv) | -7.1 km/s |
| Proper motion (μ) | RA: -9.60 mas/yr Dec.: -4.17 mas/yr |
| Parallax (π) | 6.04 ± 0.79 mas |
| Distance | approx. 540 ly (approx. 170 pc) |
| Absolute magnitude (MV) | 6.733 |
| Details | |
| Mass | ? M☉ |
| Radius | ? R☉ |
| Luminosity | ? L☉ |
| Temperature | ? K |
| Metallicity | ? |
| Rotation | ? |
| Age | ? years |
| Orbit | |
| Companion | 55 Andromedae B |
| Semimajor axis (a) | 59.8" |
| Inclination (i) | 356° |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
55 Andromedae is a star in the constellation Andromeda. Its apparent magnitude is 5.42. The spectrum of the star resembles that of Sol, a type of star not often associated with nebulous attachments and its nebulous structure is disputed.[1]
[edit] Components
| NAME | Right ascension | Declination | Apparent magnitude (V) | Spectral type | Database references |
|---|---|---|---|---|---|
| 55 Andromedae B (BD+40 394B) | 01h 53m 16.9s | +40° 44' 46 | 10.9 | Simbad |
[edit] References
- ^ http://books.google.com/books?id=rveuw8ggRnIC&pg=PA467&lpg=PA467&dq=%2255+Andromedae%22&source=bl&ots=xltRoYjOsi&sig=wzWNdGrdui04swySnj1OFzmmygw&hl=en&ei=-6qVSb2iNJK2sAPn3IyeBw&sa=X&oi=book_result&resnum=6&ct=result Problems in Astrophysics.
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