19559+2500 COU1037

 
 
19h 55m 53.36s +25 00' 09.4" P.A. 145.1 sep 0.13 mag 9.80,10.70 Sp G0+G5
 
 
Coord 2000
19559+2500
Discov num
COU1037
Comp
Coord arcsec 2000
19 55 53.36 +25 00 09.4
Date first
1973
Date last
2008
Obs
7
Pa first
155
Pa last
161
P.A. Now (θ)
145.1°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.13"
Mag pri
9.80
Mag sec
10.70
delta mag (ΔM)
0.9
Spectral class
G0+G5 (yellow/yellow)
Pri motion ra
+026
Sec motion ra
Pri motion dec
+019
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
160.9
Precise sep
0.101
Cdsa2 id
COU 1037
Constellation
Vulpecula
Ra deg
19.93148888888889
De deg
25.00261111111111
last precise pa
160.9
last precise sep
0.101
 
 
ORBITAL ELEMENTS
 
 
Period (P)39y± 0.4 Periastron (T)2001.45y± 0.1 Semi-major axis (a)0.157a± 0.01
Eccentricity (e)0.292± 0.012 Inclination (i)99°± 3.5 Longitude of periastron (ω)245.8°± 8
Node (Ω)155.7°± 4 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2007
label rho theta
2000 0.087 328.1
2001 0.061 321.7
2002 0.033 304.6
2003 0.019 229.2
2004 0.042 180.3
2005 0.071 168.9
2006 0.097 164.0
2007 0.119 161.1
2008 0.138 159.0
2009 0.151 157.4
2010 0.161 156.0
2011 0.167 154.8
2012 0.170 153.6
2013 0.170 152.4
2014 0.166 151.2
2015 0.160 149.9
2016 0.152 148.5
2017 0.142 147.0
2018 0.131 145.1
2019 0.117 142.9
2020 0.103 140.1
2021 0.087 136.3
2022 0.071 130.8
2023 0.056 122.2
2024 0.041 107.2
2025 0.032 80.4
2026 0.032 45.3
2027 0.042 19.6
2028 0.057 5.2
2029 0.072 356.9
2030 0.087 351.5

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

grafico orbita





wds19559%2B2500b.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
19559+2500 COU1037 1992 5 176 0.1 10.30 10.30 G0 O 195553.36+250009.4
19559+2500 COU1037 2007 6 159 0.1 9.80 10.70 G0 G5 NOD 195553.36+250009.4
19559+2500 COU1037 2008 7 161 0.1 9.80 10.70 G0 G5 NOD 195553.36+250009.4

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