19420+4015 KUI  94

 
 
19h 41m 57.63s +40 15' 14.6" P.A. 156.8 sep 0.47 mag 6.50,7.80 Sp A6V dist. 81.57 pc (266.08 l.y.)
 
 
Coord 2000
19420+4015
Discov num
KUI  94
Comp
Coord arcsec 2000
19 41 57.63 +40 15 14.6
Date first
1937
Date last
2014
Obs
62
Pa first
160
Pa last
158
P.A. Now (θ)
156.8°
Sep first
0.5
Sep last
0.5
Sep. Now (ρ)
0.47"
Mag pri
6.50
Mag sec
7.80
delta mag (ΔM)
1.3
Spectral class
A6V (white)
Pri motion ra
-010
Sec motion ra
Pri motion dec
+030
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
157.9
Precise sep
0.467
Constellation
Cygnus
SAO
48737
HIP
96907
Tycho2
3140-02348-1
HD
186307
HR
7499
BD
BD+39 3878
Distance
81.57
Distance ly
266.08
last precise pa
157.9
last precise sep
0.467
 
 
ORBITAL ELEMENTS
 
 
Period (P)79y Periastron (T)1981y Semi-major axis (a)0.34a
Eccentricity (e)0.38 Inclination (i)106° Longitude of periastron (ω)12°
Node (Ω)338° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.296 171.2
2001 0.315 169.8
2002 0.334 168.5
2003 0.351 167.4
2004 0.366 166.3
2005 0.381 165.4
2006 0.395 164.5
2007 0.407 163.6
2008 0.418 162.8
2009 0.428 162.1
2010 0.436 161.4
2011 0.444 160.7
2012 0.450 160.0
2013 0.456 159.4
2014 0.460 158.7
2015 0.463 158.1
2016 0.465 157.5
2017 0.465 156.8
2018 0.465 156.2
2019 0.464 155.6
2020 0.461 155.0
2021 0.458 154.3
2022 0.453 153.7
2023 0.448 153.0
2024 0.441 152.3
2025 0.434 151.6
2026 0.425 150.9
2027 0.415 150.1
2028 0.405 149.4
2029 0.393 148.5
2030 0.381 147.6

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

grafico orbita





wds19420%2B4015a.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
19420+4015 KUI 94 2006 52 164 0.4 6.50 7.80 A6V NOD 194157.63+401514.6
19420+4015 KUI 94 2007 57 164 0.4 6.50 7.80 A6V NOD 194157.63+401514.6
19420+4015 KUI 94 2014 59 159 0.5 6.50 7.80 A6V NO 194157.63+401514.6

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