19106+5429 A 1391 (HD 234826)
19h 10m 36.61s +54° 28' 35.1" P.A. 22.00 sep 0.2 mag 9.17,10.05 Sp F8 dist. 179.21 pc (584.58 l.y.)
| Coord 2000 |
19106+5429 |
|
Discov num |
A 1391 |
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Comp |
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Coord arcsec 2000 |
19 10 36.61 +54 28 35.1 |
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| Date first |
1906 |
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Date last |
2016 |
|
Obs |
29 |
|
| Pa first |
60 |
|
Pa last |
22.4 |
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P.A. Now (θ) |
35.1° |
|
| Sep first |
0.3 |
|
Sep last |
0.246 |
|
Sep. Now (ρ) |
0.266" |
|
| Mag pri |
9.17 |
|
Mag sec |
10.05 |
|
delta mag (ΔM) |
0.88 |
|
Spectral class |
F8 (yellow-white) |
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| Pri motion ra |
+017 |
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Sec motion ra |
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| Pri motion dec |
-021 |
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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 234826 |
|
Constellation |
Cygnus |
|
SAO |
31442 |
|
HIP |
94194 |
|
| Tycho2 |
3924-00237-1 |
|
HD |
234826 |
|
ADS |
12144 |
|
BD |
BD+54 2095 |
|
| Distance |
179.21 |
|
Distance ly |
584.58 |
|
ORBITAL ELEMENTS
| Period (P) | 138.12y | ± 11 |
Periastron (T) | 1981.135y | ± 0.87 |
Semi-major axis (a) | 0.238a | ± 0.032 |
| Eccentricity (e) | 0.401 | ± 0.033 |
Inclination (i) | 44.9° | ± 3.8 |
Longitude of periastron (ω) | 177.4° | ± 4.4 |
| Node (Ω) | 64.4° | ± 6.4 |
Notes | n | |
Reference | Pru2014 | |
| Equinox | 2000 | |
Last observation | 2007 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
337.6 |
0.147 |
| 2001 |
341.9 |
0.150 |
| 2002 |
346.0 |
0.155 |
| 2003 |
349.9 |
0.159 |
| 2004 |
353.6 |
0.164 |
| 2005 |
357.1 |
0.169 |
| 2006 |
0.3 |
0.174 |
| 2007 |
3.4 |
0.180 |
| 2008 |
6.2 |
0.185 |
| 2009 |
8.9 |
0.191 |
| 2010 |
11.5 |
0.197 |
| 2011 |
13.9 |
0.202 |
| 2012 |
16.2 |
0.208 |
| 2013 |
18.3 |
0.214 |
| 2014 |
20.4 |
0.219 |
| 2015 |
22.3 |
0.225 |
| 2016 |
24.2 |
0.230 |
| 2017 |
25.9 |
0.236 |
| 2018 |
27.6 |
0.241 |
| 2019 |
29.2 |
0.246 |
| 2020 |
30.8 |
0.251 |
| 2021 |
32.2 |
0.256 |
| 2022 |
33.7 |
0.261 |
| 2023 |
35.1 |
0.266 |
| 2024 |
36.4 |
0.271 |
| 2025 |
37.7 |
0.275 |
| 2026 |
38.9 |
0.279 |
| 2027 |
40.1 |
0.283 |
| 2028 |
41.3 |
0.287 |
| 2029 |
42.5 |
0.291 |
| 2030 |
43.6 |
0.295 |
|
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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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