19083+5520 D    19AB

 
 
19h 08m 20.20s +55 19' 50.0" P.A. 342.1 sep 0.49 mag 7.67,9.51 Sp A5IV dist. 119.62 pc (390.2 l.y.)
 
 
Coord 2000
19083+5520
Discov num
D    19
Comp
AB
Coord arcsec 2000
19 08 20.20 +55 19 50.0
Date first
1874
Date last
2011
Obs
40
Pa first
20
Pa last
348
P.A. Now (θ)
342.1°
Sep first
0.7
Sep last
0.5
Sep. Now (ρ)
0.49"
Mag pri
7.67
Mag sec
9.51
delta mag (ΔM)
1.84
Spectral class
A5IV (white)
Pri motion ra
+002
Sec motion ra
Pri motion dec
+019
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
19083+5520 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 19083+5520 D 19 AB 1874 2011 40 342 0.5 7.67 9.51 1.84 Y <===
Show 19083+5520 STF2479 AB,C 1828 2009 49 28 6.5 7.49 9.68 2.19
Show 19083+5520 GUI 22 AB,D 1911 2006 6 121 65.9 7.49 12.30 4.81
Quadruple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
348.1
Precise sep
0.483
Cdsa2 id
D 19 AB
Constellation
Cygnus
HIP
94000
HD
179142
ADS
12104
Ra deg
19.138944444444444
De deg
55.330555555555556
Distance
119.62
Distance ly
390.2
last precise pa
348.1
last precise sep
0.483
 
 
ORBITAL ELEMENTS
 
 
Period (P)2858y Periastron (T)1903y Semi-major axis (a)2.95a
Eccentricity (e)0.73 Inclination (i)100° Longitude of periastron (ω)162°
Node (Ω)190° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.582 350.4
2001 0.576 350.0
2002 0.571 349.6
2003 0.565 349.2
2004 0.560 348.8
2005 0.555 348.4
2006 0.549 347.9
2007 0.544 347.5
2008 0.538 347.1
2009 0.533 346.6
2010 0.528 346.1
2011 0.522 345.7
2012 0.517 345.2
2013 0.511 344.7
2014 0.506 344.2
2015 0.501 343.7
2016 0.495 343.1
2017 0.490 342.6
2018 0.485 342.1
2019 0.479 341.5
2020 0.474 340.9
2021 0.469 340.3
2022 0.464 339.7
2023 0.458 339.1
2024 0.453 338.5
2025 0.448 337.9
2026 0.443 337.2
2027 0.438 336.5
2028 0.433 335.9
2029 0.428 335.2
2030 0.423 334.4

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

grafico orbita





wds19083%2B5520a.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
19083+5520 D 19 AB 1991 36 355 0.6 7.67 9.51 A5IV N D 190820.20+551950.0
19083+5520 D 19 AB 2006 37 349 0.5 7.67 9.51 A5IV N D 190820.20+551950.0
19083+5520 D 19 AB 2008 38 348 0.5 7.67 9.51 A5IV N D 190820.20+551950.0
19083+5520 D 19 AB 2009 39 346 0.5 7.67 9.51 A5IV N D 190820.20+551950.0
19083+5520 D 19 AB 2011 40 348 0.5 7.67 9.51 A5IV NO 190820.20+551950.0

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