| Coord 2000 | 19307+2758 | Discov num | STFA 43 | Comp | AB | Coord arcsec 2000 | 19 30 43.29 +27 57 34.9 | ||||
| Date first | 1755 | Date last | 2022 | Obs | 292 | ||||||
| Pa first | 58 | Pa last | 53.9 | P.A. Now (θ) | 53.9° | ||||||
| Sep first | 34.2 | Sep last | 34.6 | Sep. Now (ρ) | 34.6" | ||||||
| Mag pri | 3.19 | Mag sec | 4.68 | delta mag (ΔM) | 1.49 | Spectral class | K3II+B9.5 (yellow-orange/blue-white) | ||||
| Pri motion ra | +006 | Sec motion ra | -001 | ||||||||
| Pri motion dec | -015 | Sec motion dec | -001 | ||||||||
| Notes | N S (See Notes, Parallax indidates non-physical) | ||||||||||
| Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
| Show | 87301 | 19 30 43 +27 57 35 | BNU 10 Aa,Ab | 1995 | 2 | 160 | 0.0 | 3.37 | 5.00 | 1.63 | |||
| Show | 87301 | 19 30 43 +27 57 35 | MCA 55 Aa,Ac | 2022 | 64 | 40 | 0.3 | 3.37 | 5.16 | 1.79 | Y | ||
| Show | Albireo | 87301 | 19 30 43 +27 57 35 | STFA 43 AB | 2022 | 292 | 54 | 34.6 | 3.19 | 4.68 | 1.49 | <=== | |
| Show | 87301 | 19 30 43 +27 57 35 | WAL 114 AC | 2022 | 12 | 341 | 65.2 | 3.19 | 10.99 | 7.80 | |||
| Show | 87301 | 19 30 43 +27 57 35 | CTT 17 AD | 2022 | 12 | 32 | 108.2 | 3.19 | 12.24 | 9.05 | |||
| Show | 87301 | 19 30 43 +27 57 35 | CTT 18 AE | 2022 | 12 | 206 | 75.3 | 3.19 | 11.81 | 8.62 | |||
| Show | 87301 | 19 30 43 +27 57 35 | SMR 34 AF | 2022 | 8 | 45 | 59.1 | 3.19 | 12.00 | 8.81 | |||
| Show | 87301 | 19 30 43 +27 57 35 | SMR 34 AG | 2022 | 7 | 45 | 162.8 | 3.19 | 12.50 | 9.31 | |||
| Show | 87301 | 19 30 43 +27 57 35 | SMR 34 AH | 2022 | 8 | 117 | 54.5 | 3.19 | 12.50 | 9.31 | |||
| Show | 87301 | 19 30 43 +27 57 35 | SMR 34 AI | 2022 | 7 | 131 | 37.5 | 3.19 | 12.50 | 9.31 | |||
| Show | 87301 | 19 30 43 +27 57 35 | SMR 34 AJ | 2022 | 6 | 132 | 146.3 | 3.19 | 10.00 | 6.81 | |||
| Show | 87301 | 19 30 43 +27 57 35 | SMR 34 AK | 2022 | 7 | 277 | 141.9 | 3.19 | 11.50 | 8.31 | |||
| Show | 87301 | 19 30 43 +27 57 35 | SMR 34 AL | 2012 | 1 | 269 | 12.0 | 3.19 | 11.50 | 8.31 | |||
| Show | 87302 | 19 30 45 +27 57 55 | RBR 12 Ba,Bb | -1 | 0 | -1 | -1.0 | 5.10 | 9.20 | 4.10 |
| Common name | Albireo | Var name | NSV12105 Cyg | Constellation | Cygnus | SAO | 87301 | ||||
| HIP | 95947 | Tycho2 | 2133-02964-1 | Gaia DR2 | 2026116260302988160 | HD | 183912 | ||||
| HR | 7417 | GC | 26953 | ADS | 12540 | BD | BD+27 3410 | ||||
| Bayer | Beta 1 Cygni | Bayer name | Bet1 Cyg | Flamsteed | 6 Cygni | Flamsteed name | 6 Cyg | ||||
| FK5 | 732 | Distance | 133.16 | Distance ly | 434.37 | Bayer greek | β1 Cyg |
| Meaning | the hen's beak |
| discov_num | notes | refcode |
| MCA 55 | Aa,Ab: bet 1 Cyg = bet Cyg A = Albireo = 6 Cyg A. Resolved in 1976 by | |
| speckle interferometry and has also been seen visually. | McA1982b | |
| See the discussion of colors and magnitudes of this composite spectrum | ||
| system by Bonneau & Foy (1980). | Bnu1980a | |
| 1977.4816: This object was incorrectly attributed to the system ADS | ||
| 12540 = STF 43 by McAlister (1979). | McA1979b | |
| McAlister & Hendry (1982) also note a distant companion. | McA1982b | |
| 1983.4904: The distant companion reported by McAlister & Hendry (1982) | McA1982b | |
| would be located beyond our 0".371 ACF window. | Bag1984a | |
| Spectral types of primary and secondary assigned by ten Brummelaar et | ||
| al., based on adaptive optics observations. | TtB2000 | |
| 1998.657: Absolute quadrant determined by triple-correlation technique | Pru2002b | |
| Aa,Ac: Malkov et al. (2012) derive dynamical and spectroscopic masses | ||
| 50.66 +/- 15.18 and 22.40 Msun, respectively. | Mlk2012 | |
| Mk III Limb-darkened diameter 4.834 +/- 0.048 mas. | MkT2003 | |
| STFA 43 | STTA183. | |
| AB: B is BD+27@3411, spectrum B8V. | ||
| The physicality of this wide pair has been discussed by Griffin. | Grf1999b | |
| 1995.559: Absolute quadrant determined by triple-correlation technique | Pru2002b | |
| AB: H 5 5. | MEv2010 | |
| While A & B may share a common origin, it seems virtually certain that | Bst2018 | |
| are not physically associated with each other. The parallax of A is | ||
| 9.95+/-0.60 mas while B is 8.38+/-0.17 mas. | ||
| RBR 12 | Ba,Bb: First resolved in 2002, after multiple non-detections, this is | Rbr2007 |
| now thought to be a measure of the known Aa,Ab pair MCA 55 with a much | Rbr2013a | |
| larger than expected position angle error. |
| refcode | metd | author | reference |
| Bag1984a | S j | Balega, Y.Y. & Ryadchenko, V.P. | 1984SvAL...10...95B |
| Bag1984a | SvAL 10, 95, 1984 | ||
| Bnu1980a | S j | Bonneau, D. & Foy, R. | 1980A&A....86..295B |
| Bnu1980a | A&A 86, 295, 1980 | ||
| Bst2018 | not | Bastian, U. & Anton, R. | 2018A&A...620L...2B |
| Bst2018 | A&AL 620, 2, 2018 | ||
| Grf1999b | not - | Griffin, R.F. | 1999JRASC..93..208G |
| Grf1999b | JRASC 93, 208, 1999 | ||
| McA1979b | Sc j | McAlister, H.A. | 1979ApJ...230..497M |
| McA1979b | ApJ 230, 497, 1979 | ||
| McA1982b | Sc j | McAlister, H.A. & Hendry, E.M. | 1982ApJS...48..273M |
| McA1982b | ApJS 48, 273, 1982 | ||
| MEv2010 | - | MacEvoy, B. | ................... |
| MEv2010 | private communication, 2010 (see http://www.handprint.com/ASTRO/index.html) | ||
| MkT2003 | Km - | Mozurkewich, D., Armstrong, J.T., Hindsley, R., Quirrenbach, A., Hummel, C.A., | 2003AJ....126.2502M |
| MkT2003 | +not | Hutter, D., Johnston, K.J., Hajian, A., Elias, N.M., II, Buscher, D., & Simon, R. | |
| MkT2003 | AJ 126, 2502, 2003 | ||
| Mlk2012 | not - | Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. | 2012A&A...546A..69M |
| Mlk2012 | A&A 546, A69, 2012 | ||
| Pru2002b | S j | Prieur, J.-L., Koechlin, L., Ginestet, N., Carquillat, J.-M., Aristidi, E., | 2002ApJS..142...95P |
| Pru2002b | Scardia, M., Arnold, L., Avila, R., et al. | ||
| Pru2002b | ApJS 142, 95, 2002 | ||
| Rbr2007 | A j | Roberts, L.C., Jr., Turner, N.H., & ten Brummelaar, T.A. | 2007AJ....133..545R |
| Rbr2007 | AJ 133, 545, 2007 | ||
| Rbr2013a | Ac j | Roberts, L.C., Jr., Bouchez, A.H., Roberts, J.E., Burruss, R., Crepp, J.R., Mawet, | . |
| Rbr2013a | D., Ohara, C.M., Cromer, J.L., Dekany, R.G., Troy, M., Velur, V. & Li, J. | ||
| Rbr2013a | in preparation | ||
| TtB2000 | Ac j | ten Brummelaar, T.A., Mason, B.D., McAlister, H.A., Roberts, L.C., Jr., | 2000AJ....119.2403T |
| TtB2000 | Turner, N.H., Hartkopf, W.I., & Bagnuolo, W.G., Jr. | ||
| TtB2000 | AJ 119, 2403, 2000 (magnitude differences from Mt. Wilson AO) |
| idgroup | discov | author |
| 1 | CTT | Courtot, J.-F. |
| 46 | SMR | Schlimmer, J. |
| 101 | STF | Struve, F.G.W. |
| 134 | WAL | Wallenquist, A. |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 19307+2758 | STFA 43 | AB | 2008 | 252 | 56 | 37.1 | 3.19 | 4.68 | NZD | 193043.29+275734.9 | |
| 19307+2758 | STFA 43 | AB | 2009 | 258 | 55 | 34.6 | 3.19 | 4.68 | NZD | 193043.29+275734.9 | |
| 19307+2758 | STFA 43 | AB | 2010 | 260 | 54 | 34.3 | 3.19 | 4.68 | NZD | 193043.29+275734.9 | |
| 19307+2758 | STFA 43 | AB | 2012 | 266 | 55 | 35.4 | 3.19 | 4.68 | NZD | 193043.29+275734.9 | |
| 19307+2758 | STFA 43 | AB | 2014 | 273 | 54 | 34.3 | 3.19 | 4.68 | K3II+B9.5 | NZD | 193043.29+275734.9 |
| 19307+2758 | STFA 43 | AB | 2016 | 277 | 54 | 34.7 | 3.19 | 4.68 | K3II+B9.5 | NZ | 193043.29+275734.9 |
| 19307+2758 | STFA 43 | AB | 2017 | 278 | 54 | 34.6 | 3.19 | 4.68 | K3II+B9.5 | NZ | 193043.29+275734.9 |
| 19307+2758 | STFA 43 | AB | 2018 | 280 | 55 | 34.7 | 3.19 | 4.68 | K3II+B9.5 | NS | 193043.29+275734.9 |
| 19307+2758 | STFA 43 | AB | 2019 | 286 | 54 | 35.2 | 3.19 | 4.68 | K3II+B9.5 | NS | 193043.29+275734.9 |
| 19307+2758 | STFA 43 | AB | 2020 | 288 | 54 | 34.6 | 3.19 | 4.68 | K3II+B9.5 | NS | 193043.29+275734.9 |
| 19307+2758 | STFA 43 | AB | 2021 | 290 | 54 | 34.7 | 3.19 | 4.68 | K3II+B9.5 | NS | 193043.29+275734.9 |
| 19307+2758 | STFA 43 | AB | 2022 | 291 | 54 | 34.6 | 3.19 | 4.68 | K3II+B9.5 | NS | 193043.29+275734.9 |
| Show | date | username | difficulty | separation | pa_estim | interest | notes |
| Show | 23/11/25 | Diego Vercelli | very easy | separated | 55 | very interesting | |
| Show | 13/09/27 | gianluca.paone | easy | separated | 42 | very interesting | Pa estim 42° |
|
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |