19302+5639 A   712

 
 
19h 30m 12.60s +56 38' 40.1" P.A. 58 sep 0.07 mag 7.49,7.94 Sp A0V dist. 251.89 pc (821.67 l.y.)
 
 
Coord 2000
19302+5639
Discov num
A   712
Comp
Coord arcsec 2000
19 30 12.60 +56 38 40.1
Date first
1904
Date last
2008
Obs
45
Pa first
89
Pa last
56
P.A. Now (θ)
58°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.07"
Mag pri
7.49
Mag sec
7.94
delta mag (ΔM)
0.45
Spectral class
A0V (white)
Pri motion ra
-009
Sec motion ra
Pri motion dec
-014
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
56
Precise sep
0.081
Constellation
Cygnus
HIP
95901
HD
184195
ADS
12552
Distance
251.89
Distance ly
821.67
last precise pa
56
last precise sep
0.081
 
 
ORBITAL ELEMENTS
 
 
Period (P)95.41y Periastron (T)1972.92y Semi-major axis (a)0.177a
Eccentricity (e)0.567 Inclination (i)99° Longitude of periastron (ω)263°
Node (Ω)98.6° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation1996
label rho theta
2000 0.143 86.4
2001 0.140 85.6
2002 0.136 84.8
2003 0.132 84.0
2004 0.129 83.1
2005 0.125 82.1
2006 0.120 81.1
2007 0.116 80.0
2008 0.112 78.9
2009 0.107 77.6
2010 0.103 76.2
2011 0.098 74.7
2012 0.093 73.0
2013 0.088 71.2
2014 0.084 69.1
2015 0.079 66.8
2016 0.074 64.2
2017 0.070 61.3
2018 0.065 58.0
2019 0.061 54.1
2020 0.057 49.8
2021 0.053 44.8
2022 0.050 39.1
2023 0.047 32.6
2024 0.045 25.5
2025 0.044 17.7
2026 0.043 9.6
2027 0.043 1.4
2028 0.044 353.3
2029 0.046 345.8
2030 0.048 338.9

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

grafico orbita





wds19302%2B5639a.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
19302+5639 A 712 1996 43 94 0.2 7.49 7.94 A0V NO 193012.60+563840.1
19302+5639 A 712 2008 45 56 0.1 7.49 7.94 A0V NO 193012.60+563840.1
19302+5639 A 712 2009 45 93 0.2 7.49 7.94 A0V NO 193012.60+563840.1

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