19348+2928 WRH  32 (9 Cyg)

 
 
19h 34m 50.92s +29 27' 46.5" P.A. 205.3 sep 0.03 mag 5.90,6.40 Sp A0V+F8III dist. 171.23 pc (558.55 l.y.)
 
 
Coord 2000
19348+2928
Discov num
WRH  32
Comp
Coord arcsec 2000
19 34 50.92 +29 27 46.5
Date first
1949
Date last
1994
Obs
19
Pa first
121
Pa last
18
P.A. Now (θ)
205.3°
Sep first
0.2
Sep last
0.0
Sep. Now (ρ)
0.03"
Mag pri
5.90
Mag sec
6.40
delta mag (ΔM)
0.5
Spectral class
A0V+F8III (white/yellow-white)
Pri motion ra
+018
Sec motion ra
Pri motion dec
+022
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
17.8
Precise sep
0.032
Name
9 Cyg
Constellation
Cygnus
SAO
87385
HIP
96302
HD
184759
HR
7441
GC
27062
Flamsteed
9 Cygni
Flamsteed name
9 Cyg
Distance
171.23
Distance ly
558.55
last precise pa
17.8
last precise sep
0.032
 
 
ORBITAL ELEMENTS
 
 
Period (P)4.56y Periastron (T)1985.56y Semi-major axis (a)0.03a
Eccentricity (e)0.82 Inclination (i)114.6° Longitude of periastron (ω)45.5°
Node (Ω)29.3° Note Grade4(1=Definitive, 9=Indet.)
Equinox Last observation1987
label rho theta
2000 0.035 201.4
2001 0.044 191.1
2002 0.037 181.1
2003 0.019 158.4
2004 0.015 217.1
2005 0.041 196.3
2006 0.042 187.1
2007 0.030 174.5
2008 0.010 116.4
2009 0.032 203.2
2010 0.043 192.2
2011 0.038 182.5
2012 0.022 163.3
2013 0.006 240.0
2014 0.040 197.5
2015 0.043 188.2
2016 0.032 176.6
2017 0.012 134.4
2018 0.029 205.3
2019 0.043 193.3
2020 0.040 183.9
2021 0.024 167.2
2022 0.006 31.0
2023 0.038 198.9
2024 0.043 189.3
2025 0.034 178.4
2026 0.015 146.2
2027 0.025 208.2
2028 0.043 194.4
2029 0.041 185.1
2030 0.027 170.3

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

grafico orbita





wds19348%2B2928a.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
19348+2928 WRH 32 1994 19 18 0.0 5.90 6.40 A0V+F8III NO 193450.92+292746.5

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