19302+5639 A 712 (HD 184195)
19h 30m 12.60s +56° 38' 40.1" P.A. 72.00 sep 0.1 mag 7.49,7.94 Sp A0V dist. 251.89 pc (821.67 l.y.)
| Coord 2000 |
19302+5639 |
|
Discov num |
A 712 |
|
Comp |
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Coord arcsec 2000 |
19 30 12.60 +56 38 40.1 |
|
| Date first |
1904 |
|
Date last |
2011 |
|
Obs |
47 |
|
| Pa first |
89 |
|
Pa last |
72.2 |
|
P.A. Now (θ) |
32.6° |
|
| Sep first |
0.2 |
|
Sep last |
0.107 |
|
Sep. Now (ρ) |
0.047" |
|
| Mag pri |
7.49 |
|
Mag sec |
7.94 |
|
delta mag (ΔM) |
0.45 |
|
Spectral class |
A0V (white) |
|
| Pri motion ra |
-009 |
|
Sec motion ra |
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|
| Pri motion dec |
-014 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 184195 |
|
Constellation |
Cygnus |
|
SAO |
31716 |
|
HIP |
95901 |
|
| Tycho2 |
3929-01916-1 |
|
Gaia DR2 |
2142109651779043072 |
|
HD |
184195 |
|
GC |
26963 |
|
| ADS |
12552 |
|
BD |
BD+56 2250 |
|
Distance |
251.89 |
|
Distance ly |
821.67 |
|
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° | |
Notes | n | |
Reference | USN2006b | |
| Equinox | 2000 | |
Last observation | 1996 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
86.4 |
0.143 |
| 2001 |
85.6 |
0.140 |
| 2002 |
84.8 |
0.136 |
| 2003 |
84.0 |
0.132 |
| 2004 |
83.1 |
0.129 |
| 2005 |
82.1 |
0.125 |
| 2006 |
81.1 |
0.120 |
| 2007 |
80.0 |
0.116 |
| 2008 |
78.9 |
0.112 |
| 2009 |
77.6 |
0.107 |
| 2010 |
76.2 |
0.103 |
| 2011 |
74.7 |
0.098 |
| 2012 |
73.0 |
0.093 |
| 2013 |
71.2 |
0.088 |
| 2014 |
69.1 |
0.084 |
| 2015 |
66.8 |
0.079 |
| 2016 |
64.2 |
0.074 |
| 2017 |
61.3 |
0.070 |
| 2018 |
58.0 |
0.065 |
| 2019 |
54.1 |
0.061 |
| 2020 |
49.8 |
0.057 |
| 2021 |
44.8 |
0.053 |
| 2022 |
39.1 |
0.050 |
| 2023 |
32.6 |
0.047 |
| 2024 |
25.5 |
0.045 |
| 2025 |
17.7 |
0.044 |
| 2026 |
9.6 |
0.043 |
| 2027 |
1.4 |
0.043 |
| 2028 |
353.3 |
0.044 |
| 2029 |
345.8 |
0.046 |
| 2030 |
338.9 |
0.048 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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