19307+2758 RBR 12 Ba,Bb
19h 30m 45.40s +27° 57' 55.0" P.A. -1.00 sep -1.0 mag 5.10,9.20 Sp B8V+G4V dist. 122.55 pc (399.76 l.y.)
| Coord 2000 | 19307+2758 | Discov num | RBR 12 | Comp | Ba,Bb | Coord arcsec 2000 | 19 30 45.40 +27 57 55.0 | ||||
| Date first | -1 | Date last | -1 | Obs | 0 | ||||||
| Pa first | -1 | Pa last | -1 | P.A. Now (θ) | -1 | ||||||
| Sep first | -1.0 | Sep last | -1 | Sep. Now (ρ) | -1 | ||||||
| Mag pri | 5.10 | Mag sec | 9.20 | delta mag (ΔM) | 4.1 | Spectral class | B8V+G4V (blue-white/yellow) | ||||
| Pri motion ra | -002 | Sec motion ra | |||||||||
| Pri motion dec | -001 | Sec motion dec | |||||||||
| Notes | N X (See Notes, Dubious double) | ||||||||||
19307+2758 SYSTEM COMPONENTS
| 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 | <=== |
12 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation | Cygnus | SAO | 87302 | HIP | 95951 | Tycho2 | 2133-02963-1 | ||||
| Gaia DR2 | 2026113339752723456 | HD | 183914 | HR | 7418 | GC | 26956 | ||||
| ADS | 12540 | BD | BD+27 3411 | Bayer | Beta 2 Cygni | Bayer name | Bet2 Cyg | ||||
| Distance | 122.55 | Distance ly | 399.76 | Bayer greek | β2 Cyg |
WDS 19307+2758 RBR 12 Ba,Bb : NOTES
| 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. |
REFERENCES
| 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) |
DISCOVERER
| idgroup | discov | author |
| 1 | CTT | Courtot, J.-F. |
| 46 | SMR | Schlimmer, J. |
| 101 | STF | Struve, F.G.W. |
| 134 | WAL | Wallenquist, A. |
WDS HISTORIC DATA
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 19307+2758 | RBR 12 | Ba,Bb | -1 | 0 | -1 | -1.0 | 5.10 | 9.20 | B8V+G4V | NX | 193045.40+275755.0 |
| 19307+2758 | RBR 12 | Ba,Bb | 2002 | 1 | 108 | 0.4 | 5.09 | B8V+G4V | D | 193045.40+275755.0 |
If you need more information about this double, apply for a data request form to the WDS.
WDS 19307+2758 RBR 12 Ba,Bb : VISUAL OBSERVATIONS REPORTS
WDS 19307+2758 RBR 12 Ba,Bb : MEASURES
WDS 19307+2758 : VIRTUAL EYEPIECE
|
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
WDS 19307+2758 : ALADIN DSS IMAGE @
Error -22130
Not valid ID.
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.
Not valid ID.
Error -27220
Not valid ID.