| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 01h 02m 54.25356s [1] |
| Declination | +41° 20′ 42.7673″ [1] |
| Apparent magnitude (V) | 5.80 [2] |
| Characteristics | |
| Spectral type | B7 III-IV [3] |
| B−V color index | −0.095±0.004 [2] |
| Astrometry | |
| Radial velocity (Rv) | −1.5±1.0 [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 | 341 ± 3
ly (104.5 ± 0.9 pc) |
| Absolute magnitude (MV) | −1.10 [2] |
| Details | |
| Radius | 5.2 [5] R☉ |
| Luminosity | 413.92 [2] L☉ |
| Temperature | 12,874±167 [6] K |
| Rotational velocity (v sin i) | 60 [7] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
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 9.57 mas, [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 0.10 ″ along a position angle of 225° from the primary. [9]
- ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051.
- ^ a b c d e f Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv: 1108.4971, Bibcode: 2012AstL...38..331A, doi: 10.1134/S1063773712050015, S2CID 119257644.
- ^ a b Cowley, A. (November 1972), "Spectral classification of the bright B8 stars", Astronomical Journal, 77: 750–755, Bibcode: 1972AJ.....77..750C, doi: 10.1086/111348.
- ^ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv: 1208.3048, Bibcode: 2012A&A...546A..61D, doi: 10.1051/0004-6361/201219219, S2CID 59451347, A61.
- ^ a b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (2) (Third ed.): 521–524, arXiv: astro-ph/0012289, Bibcode: 2001A&A...367..521P, doi: 10.1051/0004-6361:20000451, S2CID 425754.
- ^ a b Soubiran, Caroline; et al. (2016), "The PASTEL catalogue: 2016 version", Astronomy & Astrophysics, 591: A118, arXiv: 1605.07384, Bibcode: 2016A&A...591A.118S, doi: 10.1051/0004-6361/201628497, S2CID 119258214.
- ^ Strom, Stephen E.; et al. (2005), "B Star Rotational Velocities in h and χ Persei: A Probe of Initial Conditions during the Star Formation Epoch?", The Astronomical Journal, 129 (2): 809–828, arXiv: astro-ph/0410337, Bibcode: 2005AJ....129..809S, doi: 10.1086/426748, S2CID 15059129.
- ^ "45 And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved September 28, 2018.
- ^ a b Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466–3471, Bibcode: 2001AJ....122.3466M, doi: 10.1086/323920.
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 01h 02m 54.25356s [1] |
| Declination | +41° 20′ 42.7673″ [1] |
| Apparent magnitude (V) | 5.80 [2] |
| Characteristics | |
| Spectral type | B7 III-IV [3] |
| B−V color index | −0.095±0.004 [2] |
| Astrometry | |
| Radial velocity (Rv) | −1.5±1.0 [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 | 341 ± 3
ly (104.5 ± 0.9 pc) |
| Absolute magnitude (MV) | −1.10 [2] |
| Details | |
| Radius | 5.2 [5] R☉ |
| Luminosity | 413.92 [2] L☉ |
| Temperature | 12,874±167 [6] K |
| Rotational velocity (v sin i) | 60 [7] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
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 9.57 mas, [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 0.10 ″ along a position angle of 225° from the primary. [9]
- ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051.
- ^ a b c d e f Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv: 1108.4971, Bibcode: 2012AstL...38..331A, doi: 10.1134/S1063773712050015, S2CID 119257644.
- ^ a b Cowley, A. (November 1972), "Spectral classification of the bright B8 stars", Astronomical Journal, 77: 750–755, Bibcode: 1972AJ.....77..750C, doi: 10.1086/111348.
- ^ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv: 1208.3048, Bibcode: 2012A&A...546A..61D, doi: 10.1051/0004-6361/201219219, S2CID 59451347, A61.
- ^ a b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (2) (Third ed.): 521–524, arXiv: astro-ph/0012289, Bibcode: 2001A&A...367..521P, doi: 10.1051/0004-6361:20000451, S2CID 425754.
- ^ a b Soubiran, Caroline; et al. (2016), "The PASTEL catalogue: 2016 version", Astronomy & Astrophysics, 591: A118, arXiv: 1605.07384, Bibcode: 2016A&A...591A.118S, doi: 10.1051/0004-6361/201628497, S2CID 119258214.
- ^ Strom, Stephen E.; et al. (2005), "B Star Rotational Velocities in h and χ Persei: A Probe of Initial Conditions during the Star Formation Epoch?", The Astronomical Journal, 129 (2): 809–828, arXiv: astro-ph/0410337, Bibcode: 2005AJ....129..809S, doi: 10.1086/426748, S2CID 15059129.
- ^ "45 And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved September 28, 2018.
- ^ a b Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466–3471, Bibcode: 2001AJ....122.3466M, doi: 10.1086/323920.
| Stars |
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|
Star clusters |
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| Nebulae |
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| Galaxies |
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