19307+2758 MCA 55 Aa,Ac
19h 30m 43.29s +27° 57' 34.9" P.A. 40.00 sep 0.3 mag 3.37,5.16 Sp K3III+B0V dist. 133.16 pc (434.37 l.y.)
Coord 2000 |
19307+2758 |
|
Discov num |
MCA 55 |
|
Comp |
Aa,Ac |
|
Coord arcsec 2000 |
19 30 43.29 +27 57 34.9 |
|
Date first |
1976 |
|
Date last |
2022 |
|
Obs |
64 |
|
Pa first |
186 |
|
Pa last |
40 |
|
P.A. Now (θ) |
233.8° |
|
Sep first |
0.4 |
|
Sep last |
0.314 |
|
Sep. Now (ρ) |
0.405" |
|
Mag pri |
3.37 |
|
Mag sec |
5.16 |
|
delta mag (ΔM) |
1.79 |
|
Spectral class |
K3III+B0V (yellow-orange/blue-white) |
|
Pri motion ra |
-002 |
|
Sec motion ra |
-002 |
|
Pri motion dec |
-001 |
|
Sec motion dec |
-001 |
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
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 |
|
|
15-fold system
12 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
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 |
|
ORBITAL ELEMENTS
Period (P) | 68.61y | ± 5.79 |
Periastron (T) | 2015.4y | ± 1.4 |
Semi-major axis (a) | 0.558a | ± 0.033 |
Eccentricity (e) | 0.7869 | ± 0.0096 |
Inclination (i) | 114.7° | ± 1.1 |
Longitude of periastron (ω) | 264.8° | ± 1.1 |
Node (Ω) | 255.3° | ± 6.2 |
Notes | n | |
Reference | Rbr2018 | |
Equinox | 2000 | |
Last observation | 2008 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
128.4 |
0.387 |
2001 |
125.6 |
0.385 |
2002 |
122.8 |
0.383 |
2003 |
119.9 |
0.380 |
2004 |
116.9 |
0.377 |
2005 |
113.9 |
0.372 |
2006 |
110.8 |
0.367 |
2007 |
107.6 |
0.360 |
2008 |
104.3 |
0.351 |
2009 |
100.8 |
0.339 |
2010 |
96.9 |
0.324 |
2011 |
92.6 |
0.303 |
2012 |
87.6 |
0.275 |
2013 |
81.2 |
0.235 |
2014 |
71.1 |
0.174 |
2015 |
42.3 |
0.081 |
2016 |
286.5 |
0.088 |
2017 |
261.3 |
0.184 |
2018 |
252.5 |
0.252 |
2019 |
247.0 |
0.301 |
2020 |
242.8 |
0.337 |
2021 |
239.4 |
0.365 |
2022 |
236.5 |
0.387 |
2023 |
233.8 |
0.405 |
2024 |
231.3 |
0.419 |
2025 |
229.0 |
0.431 |
2026 |
226.7 |
0.440 |
2027 |
224.6 |
0.447 |
2028 |
222.5 |
0.453 |
2029 |
220.5 |
0.457 |
2030 |
218.5 |
0.460 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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