20136+4644 WRH 33 Aa,Ab
20h 13m 37.90s +46° 44' 28.8" P.A. 111.00 sep 0.0 mag 3.93, Sp K4Ib+B3V dist. 271 pc (884 l.y.)
| Coord 2000 |
20136+4644 |
|
Discov num |
WRH 33 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
20 13 37.90 +46 44 28.8 |
|
| Date first |
1949 |
|
Date last |
1985 |
|
Obs |
6 |
|
| Pa first |
140 |
|
Pa last |
111.4 |
|
P.A. Now (θ) |
350.2° |
|
| Sep first |
0.1 |
|
Sep last |
0.027 |
|
Sep. Now (ρ) |
0.02" |
|
| Mag pri |
3.93 |
|
Mag sec |
|
|
delta mag (ΔM) |
|
|
Spectral class |
K4Ib+B3V (yellow-orange/blue-white) |
|
| Pri motion ra |
+004 |
|
Sec motion ra |
|
|
| Pri motion dec |
+003 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
20136+4644 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
49337 |
20 13 38 +46 44 29 |
WRH 33 Aa,Ab |
1985 |
6 |
111 |
0.0 |
3.93 |
|
|
Y |
<=== |
| Show |
|
49337 |
20 13 38 +46 44 29 |
HJ 1495 AB |
2015 |
12 |
328 |
36.5 |
3.93 |
13.40 |
9.47 |
|
|
| Show |
Omi1 Cyg |
49337 |
20 13 38 +46 44 29 |
STFA 50 AC |
2016 |
46 |
173 |
108.6 |
3.93 |
6.97 |
3.04 |
|
|
| Show |
|
49337 |
20 13 38 +46 44 29 |
STFA 50 AD |
2016 |
38 |
322 |
336.7 |
3.93 |
4.83 |
0.90 |
|
|
| Show |
|
49337 |
20 13 38 +46 44 29 |
BU 1483 AF |
2015 |
4 |
168 |
43.5 |
3.93 |
13.90 |
9.97 |
|
|
| Show |
|
49338 |
20 13 39 +46 42 43 |
BU 1483 CG |
2003 |
3 |
95 |
37.9 |
6.97 |
14.20 |
7.23 |
|
|
| Show |
|
49338 |
20 13 39 +46 42 43 |
BU 1483 CH |
2014 |
4 |
62 |
60.6 |
6.97 |
12.60 |
5.63 |
|
|
| Show |
|
49338 |
20 13 39 +46 42 43 |
BU 1483 CI |
2015 |
7 |
136 |
60.2 |
6.97 |
12.26 |
5.29 |
|
|
| Show |
|
49332 |
20 13 18 +46 48 56 |
GUI 30 DC |
2003 |
27 |
150 |
431.8 |
4.83 |
6.97 |
2.14 |
|
|
| Show |
|
49332 |
20 13 18 +46 48 56 |
ES 26 DE |
2003 |
4 |
252 |
36.3 |
4.83 |
13.20 |
8.37 |
|
|
| Show |
|
|
20 13 39 +46 43 46 |
SMR 68 FJ |
2021 |
4 |
218 |
4.0 |
13.90 |
15.10 |
1.20 |
|
|
| Show |
|
|
20 13 44 +46 43 11 |
SMR 68 HK |
2021 |
9 |
263 |
9.0 |
11.74 |
10.87 |
0.87 |
|
|
12-fold system
11 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
V695 Cyg |
|
Constellation |
Cygnus |
|
SAO |
49337 |
|
HIP |
99675 |
|
| Tycho2 |
3559-02797-1 |
|
Gaia DR2 |
2082600852678091904 |
|
HD |
192577 |
|
HR |
7735 |
|
| GC |
28099 |
|
ADS |
13554 |
|
BD |
BD+46 2882 |
|
Bayer |
Omicron 1 Cygni |
|
| Bayer name |
Omi1 Cyg |
|
Flamsteed |
31 Cygni |
|
Flamsteed name |
31 Cyg |
|
FK5 |
757 |
|
| Distance |
271 |
|
Distance ly |
884 |
|
Bayer greek |
ο1 Cyg |
|
ORBITAL ELEMENTS
| Period (P) | 10.04y | |
Periastron (T) | 1963.012y | |
Semi-major axis (a) | 0.043a | |
| Eccentricity (e) | 0.118 | |
Inclination (i) | 104.7° | |
Longitude of periastron (ω) | 129.8° | |
| Node (Ω) | 144.9° | |
Notes | n | |
Reference | Msn2013a | |
| Equinox | 2000 | |
Last observation | 1985 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
143.8 |
0.045 |
| 2001 |
133.5 |
0.034 |
| 2002 |
95.6 |
0.013 |
| 2003 |
347.1 |
0.022 |
| 2004 |
328.2 |
0.038 |
| 2005 |
317.1 |
0.037 |
| 2006 |
297.4 |
0.022 |
| 2007 |
214.8 |
0.013 |
| 2008 |
165.3 |
0.029 |
| 2009 |
152.3 |
0.043 |
| 2010 |
144.1 |
0.046 |
| 2011 |
134.1 |
0.035 |
| 2012 |
99.4 |
0.014 |
| 2013 |
348.5 |
0.021 |
| 2014 |
328.7 |
0.038 |
| 2015 |
317.6 |
0.037 |
| 2016 |
298.8 |
0.023 |
| 2017 |
219.1 |
0.012 |
| 2018 |
166.1 |
0.028 |
| 2019 |
152.6 |
0.042 |
| 2020 |
144.4 |
0.046 |
| 2021 |
134.6 |
0.035 |
| 2022 |
102.8 |
0.014 |
| 2023 |
350.2 |
0.020 |
| 2024 |
329.2 |
0.037 |
| 2025 |
318.1 |
0.038 |
| 2026 |
300.0 |
0.023 |
| 2027 |
223.6 |
0.012 |
| 2028 |
167.0 |
0.027 |
| 2029 |
153.0 |
0.042 |
| 2030 |
144.7 |
0.046 |
|
|
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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