19307+2758 MCA  55Aa,Ac

 
 
19h 30m 43.29s +27 57' 34.9" P.A. 252.5 sep 0.25 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
2008
Obs
58
Pa first
186
Pa last
101
P.A. Now (θ)
252.5°
Sep first
0.4
Sep last
0.4
Sep. Now (ρ)
0.25"
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 87301 19307+2758 BNU 10 Aa,Ab 1978 1995 2 160 0.0 3.37 5.00 1.63
Show 87301 19307+2758 MCA 55 Aa,Ac 1976 2008 58 252 0.2 3.37 5.16 1.79 Y <===
Show Albireo 87301 19307+2758 STFA 43 AB 1755 2017 278 54 34.6 3.19 4.68 1.49
Show 19307+2758 WAL 114 AC 1944 2012 6 340 64.8 3.19 10.99 7.80
Show 19307+2758 CTT 17 AD 1894 2012 6 32 107.2 3.19 12.24 9.05
Show 19307+2758 CTT 18 AE 1894 2012 6 206 75.8 3.19 11.81 8.62
Show 19307+2758 SMR 34 AF 1998 2012 2 45 58.3 3.19 12.00 8.81
Show 19307+2758 SMR 34 AG 1998 2012 2 44 161.4 3.19 12.50 9.31
Show 19307+2758 SMR 34 AH 1998 2012 2 118 54.0 3.19 12.50 9.31
Show 19307+2758 SMR 34 AI 1998 2012 2 132 37.6 3.19 12.50 9.31
Show 19307+2758 SMR 34 AJ 1991 2012 3 210 139.0 3.19 10.00 6.81
Show 19307+2758 SMR 34 AK 1998 2012 2 277 142.2 3.19 11.50 8.31
Show 19307+2758 SMR 34 AL 2012 2012 1 269 12.0 3.19 11.50 8.31
Show 87302 19307+2758 RBR 12 Ba,Bb 2002 2002 1 108 0.4 5.10 9.20 4.10
15-fold system
12 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
100.8
Precise sep
0.361
Constellation
Cygnus
SAO
87301
HIP
95947
HD
183912
HR
7417
GC
26953
ADS
12540
Bayer
Beta 1 Cygni
Bayer name
Bet1 Cyg
Flamsteed
6 Cygni
Flamsteed name
6 Cyg
Distance
133.16
Distance ly
434.37
last precise pa
100.8
last precise sep
0.361
 
 
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 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2008
label rho theta
2000 0.387 128.4
2001 0.385 125.6
2002 0.383 122.8
2003 0.380 119.9
2004 0.377 116.9
2005 0.372 113.9
2006 0.367 110.8
2007 0.360 107.6
2008 0.351 104.3
2009 0.339 100.8
2010 0.324 96.9
2011 0.303 92.6
2012 0.275 87.6
2013 0.235 81.2
2014 0.174 71.1
2015 0.081 42.3
2016 0.088 286.5
2017 0.184 261.3
2018 0.252 252.5
2019 0.301 247.0
2020 0.337 242.8
2021 0.365 239.4
2022 0.387 236.5
2023 0.405 233.8
2024 0.419 231.3
2025 0.431 229.0
2026 0.440 226.7
2027 0.447 224.6
2028 0.453 222.5
2029 0.457 220.5
2030 0.460 218.5

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

grafico orbita





wds19307%2B2758f.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
19307+2758 MCA 55 Aa,Ac 2005 49 110 0.4 3.37   K3III+B0V NOD 193043.29+275734.9
19307+2758 MCA 55 Aa,Ac 2006 51 106 0.4 3.50 5.90 K3III+B0V NOD 193043.29+275734.9
19307+2758 MCA 55 Aa,Ac 2008 53 101 0.4 3.50 5.90 K3III+B0V NOD 193043.29+275734.9

If you need more information about this double, apply for a data request form to the WDS.