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° Notesn ReferenceMsn2013a
Equinox2000 Last observation1985 Grade3(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


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



 
 


wds20136%2B4644a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic