20136+4644 WRH  33Aa,Ab

 
 
20h 13m 37.90s +46 44' 28.8" P.A. 152.6 sep 0.04 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
P.A. Now (θ)
152.6°
Sep first
0.1
Sep last
0.0
Sep. Now (ρ)
0.04"
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 49337 20136+4644 WRH 33 Aa,Ab 1949 1985 6 153 0.0 3.93 Y <===
Show 31 Cyg 49332 20136+4644 HJ 1495 AB 1828 2015 12 328 36.5 3.93 13.40 9.47
Show 20136+4644 STFA 50 AC 1779 2016 46 173 108.6 3.93 6.97 3.04
Show 20136+4644 STFA 50 AD 1800 2016 38 322 336.7 3.93 4.83 0.90
Show 20136+4644 BU 1483 AF 1878 2015 4 168 43.5 3.93 13.90 9.97
Show 20136+4644 BU 1483 CG 1878 2003 3 95 37.9 6.97 14.20 7.23
Show 20136+4644 BU 1483 CH 1878 2014 4 62 60.6 6.97 12.60 5.63
Show 20136+4644 BU 1483 CI 1878 2015 7 136 60.2 6.97 12.26 5.29
Show 49332 20136+4644 GUI 30 DC 1800 2003 27 150 431.8 4.83 6.97 2.14
Show 20136+4644 ES 26 DE 1900 2003 4 252 36.3 4.83 13.20 8.37
Show 20136+4644 SMR 68 FJ 2003 2015 3 217 4.2 13.90 15.10 1.20
Show 20136+4644 SMR 68 HK 2000 2015 4 262 8.9 11.74 10.87 0.87
12-fold system
11 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
111.4
Precise sep
0.027
Var name
V695 Cyg
Constellation
Cygnus
SAO
49337
HIP
99675
Tycho2
3559-02797-1
Gaia DR2
52678091904
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
Distance
271
Distance ly
884
last precise pa
111.4
last precise sep
0.027
 
 
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° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation1985
label rho theta
2000 0.045 143.8
2001 0.034 133.5
2002 0.013 95.6
2003 0.022 347.1
2004 0.038 328.2
2005 0.037 317.1
2006 0.022 297.4
2007 0.013 214.8
2008 0.029 165.3
2009 0.043 152.3
2010 0.046 144.1
2011 0.035 134.1
2012 0.014 99.4
2013 0.021 348.5
2014 0.038 328.7
2015 0.037 317.6
2016 0.023 298.8
2017 0.012 219.1
2018 0.028 166.1
2019 0.042 152.6
2020 0.046 144.4
2021 0.035 134.6
2022 0.014 102.8
2023 0.020 350.2
2024 0.037 329.2
2025 0.038 318.1
2026 0.023 300.0
2027 0.012 223.6
2028 0.027 167.0
2029 0.042 153.0
2030 0.046 144.7

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
 
grafico orbita






wds20136%2B4644a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20136+4644 WRH 33 Aa,Ab 1985 5 111 0.0 3.93   K2II+B3V NO 201337.90+464428.8

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