19550+4152 HO  581

 
 
19h 54m 58.40s +41 52' 17.6" P.A. 24 sep 0.22 mag 8.03,8.72 Sp G9V dist. 46.23 pc (150.8 l.y.)
 
 
Coord 2000
19550+4152
Discov num
HO  581
Comp
Coord arcsec 2000
19 54 58.40 +41 52 17.6
Date first
1895
Date last
2006
Obs
118
Pa first
258
Pa last
133
P.A. Now (θ)
24°
Sep first
0.3
Sep last
0.3
Sep. Now (ρ)
0.22"
Mag pri
8.03
Mag sec
8.72
delta mag (ΔM)
0.69
Spectral class
G9V (yellow)
Pri motion ra
-044
Sec motion ra
Pri motion dec
+293
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
132.8
Precise sep
0.286
Constellation
Cygnus
SAO
48968
HIP
98001
Tycho2
3145-00504-1
HD
188753
ADS
13125
BD
BD+41 3535
Distance
46.23
Distance ly
150.8
last precise pa
132.8
last precise sep
0.286
 
 
ORBITAL ELEMENTS
 
 
Period (P)25.7y Periastron (T)1988.2y Semi-major axis (a)0.27a
Eccentricity (e)0.5 Inclination (i)34° Longitude of periastron (ω)236°
Node (Ω)43° Note Grade1(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.364 88.0
2001 0.359 93.6
2002 0.352 99.4
2003 0.342 105.5
2004 0.329 112.0
2005 0.315 119.0
2006 0.299 126.8
2007 0.282 135.5
2008 0.263 145.4
2009 0.244 156.8
2010 0.224 170.2
2011 0.202 186.5
2012 0.176 207.0
2013 0.146 235.4
2014 0.118 279.1
2015 0.128 331.0
2016 0.172 4.7
2017 0.220 24.0
2018 0.260 36.8
2019 0.292 46.4
2020 0.318 54.2
2021 0.337 61.0
2022 0.351 67.2
2023 0.360 73.0
2024 0.364 78.6
2025 0.365 84.1
2026 0.363 89.6
2027 0.357 95.3
2028 0.349 101.2
2029 0.338 107.4
2030 0.325 114.0

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

grafico orbita





wds19550%2B4152a.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
19550+4152 HO 581 2003 121 111 0.3 8.03 8.72 G9V NOD 195458.41+415215.0
19550+4152 HO 581 2006 122 133 0.3 8.03 8.72 G9V NOD 195458.41+415215.0

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