19556+5226 YR 2 Aa,Ab
19h 55m 37.82s +52° 26' 20.5" P.A. 45.00 sep 0.1 mag 5.60,6.10 Sp A4Vn dist. 86.28 pc (281.45 l.y.)
| Coord 2000 |
19556+5226 |
|
Discov num |
YR 2 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
19 55 37.82 +52 26 20.5 |
|
| Date first |
1996 |
|
Date last |
2010 |
|
Obs |
16 |
|
| Pa first |
106 |
|
Pa last |
45 |
|
P.A. Now (θ) |
45° |
|
| Sep first |
0.1 |
|
Sep last |
0.111 |
|
Sep. Now (ρ) |
0.111" |
|
| Mag pri |
5.60 |
|
Mag sec |
6.10 |
|
delta mag (ΔM) |
0.5 |
|
Spectral class |
A4Vn (white) |
|
| Pri motion ra |
-034 |
|
Sec motion ra |
|
|
| Pri motion dec |
-022 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
19556+5226 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
32114 |
19 55 38 +52 26 20 |
YR 2 Aa,Ab |
2010 |
16 |
45 |
0.1 |
5.60 |
6.10 |
0.50 |
Y |
<=== |
| Show |
Psi Cyg |
32114 |
19 55 38 +52 26 20 |
STF 2605 AB |
2017 |
132 |
175 |
2.9 |
5.03 |
7.52 |
2.49 |
|
|
| Show |
|
32114 |
19 55 38 +52 26 20 |
STF 2605 AC |
2003 |
5 |
53 |
23.9 |
5.03 |
13.80 |
8.77 |
|
|
| Show |
|
32114 |
19 55 38 +52 26 20 |
STF 2605 AD |
2003 |
8 |
60 |
169.8 |
5.03 |
11.31 |
6.28 |
|
|
Quintuple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
SAO |
32114 |
|
HIP |
98055 |
|
Tycho2 |
3570-02426-1 |
|
| Gaia DR2 |
2089092884718210432 |
|
HD |
189037 |
|
HR |
7619 |
|
GC |
27618 |
|
| ADS |
13148 |
|
BD |
BD+52 2572 |
|
Bayer |
Psi Cygni |
|
Bayer name |
Psi Cyg |
|
| Flamsteed |
24 Cygni |
|
Flamsteed name |
24 Cyg |
|
Distance |
86.28 |
|
Distance ly |
281.45 |
|
| Bayer greek |
ψ Cyg |
|
ORBITAL ELEMENTS
| Period (P) | 54.08y | |
Periastron (T) | 2016.9y | |
Semi-major axis (a) | 0.141a | |
| Eccentricity (e) | 0.484 | |
Inclination (i) | 113° | |
Longitude of periastron (ω) | 259.9° | |
| Node (Ω) | 216.7° | |
Notes | n | |
Reference | Hrt2013c | |
| Equinox | 2000 | |
Last observation | 2010 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
85.7 |
0.092 |
| 2001 |
80.5 |
0.096 |
| 2002 |
75.8 |
0.099 |
| 2003 |
71.3 |
0.103 |
| 2004 |
67.2 |
0.107 |
| 2005 |
63.4 |
0.110 |
| 2006 |
59.7 |
0.112 |
| 2007 |
56.2 |
0.114 |
| 2008 |
52.7 |
0.115 |
| 2009 |
49.3 |
0.115 |
| 2010 |
45.8 |
0.113 |
| 2011 |
42.1 |
0.109 |
| 2012 |
38.1 |
0.102 |
| 2013 |
33.3 |
0.093 |
| 2014 |
27.2 |
0.080 |
| 2015 |
18.3 |
0.063 |
| 2016 |
2.1 |
0.044 |
| 2017 |
326.3 |
0.030 |
| 2018 |
275.1 |
0.033 |
| 2019 |
247.7 |
0.051 |
| 2020 |
235.0 |
0.070 |
| 2021 |
227.6 |
0.087 |
| 2022 |
222.5 |
0.101 |
| 2023 |
218.5 |
0.113 |
| 2024 |
215.2 |
0.122 |
| 2025 |
212.4 |
0.129 |
| 2026 |
209.7 |
0.134 |
| 2027 |
207.3 |
0.137 |
| 2028 |
204.9 |
0.139 |
| 2029 |
202.6 |
0.140 |
| 2030 |
200.2 |
0.139 |
| 2031 |
197.9 |
0.138 |
| 2032 |
195.5 |
0.136 |
| 2033 |
193.0 |
0.133 |
| 2034 |
190.4 |
0.130 |
| 2035 |
187.6 |
0.127 |
| 2036 |
184.7 |
0.123 |
| 2037 |
181.6 |
0.118 |
| 2038 |
178.2 |
0.114 |
| 2039 |
174.6 |
0.109 |
| 2040 |
170.6 |
0.105 |
| 2041 |
166.3 |
0.100 |
| 2042 |
161.6 |
0.096 |
| 2043 |
156.4 |
0.092 |
| 2044 |
150.9 |
0.088 |
| 2045 |
144.8 |
0.085 |
| 2046 |
138.4 |
0.083 |
| 2047 |
131.7 |
0.081 |
| 2048 |
124.8 |
0.080 |
| 2049 |
117.8 |
0.080 |
| 2050 |
110.8 |
0.081 |
|
|
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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