19069+4137 COU2197

 
 
19H 06M 56.22S +41 37' 19.6" P.A. 256 SEP 0.16 MAG 9.10,9.10 SP F5
 
 
Coord 2000
19069+4137
Discov num
COU2197
Comp
Coord arcsec 2000
19 06 56.22 +41 37 19.6
Date first
1984
Date last
2008
Obs
12
Pa first
103
Pa last
348
P.A. Now (θ)
256°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.16"
Mag pri
9.10
Mag sec
9.10
delta mag (ΔM)
0
Spectral class
F5 (yellow-white)
Pri motion ra
+010
Sec motion ra
Pri motion dec
+012
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Lyra
HD
178474
last precise pa
348.1
last precise sep
0.211
 
 
ORBITAL ELEMENTS
 
 
Period (P)46.59y Periastron (T)2024.45y Semi-major axis (a)0.203a
Eccentricity (e)0.167 Inclination (i)146.7° Longitude of periastron (ω)188.8°
Node (Ω)23.1° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2008
label rho theta
2000 0.237 21.1
2001 0.236 16.5
2002 0.235 11.7
2003 0.232 6.9
2004 0.229 2.0
2005 0.224 356.9
2006 0.219 351.5
2007 0.213 345.9
2008 0.207 340.0
2009 0.200 333.6
2010 0.193 326.8
2011 0.186 319.5
2012 0.180 311.7
2013 0.174 303.3
2014 0.170 294.4
2015 0.166 285.2
2016 0.164 275.5
2017 0.164 265.8
2018 0.164 256.0
2019 0.165 246.3
2020 0.167 236.7
2021 0.168 227.4
2022 0.169 218.1
2023 0.170 209.0
2024 0.169 199.9
2025 0.168 190.6
2026 0.165 181.1
2027 0.162 171.4
2028 0.160 161.3
2029 0.158 150.8
2030 0.157 140.2

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic