19467+4421 YSC 136 (HD 187160)
19h 46m 41.20s +44° 20' 54.7" P.A. 287.00 sep 0.1 mag 7.40,8.70 Sp G0 dist. 40.23 pc (131.23 l.y.)
| Coord 2000 |
19467+4421 |
|
Discov num |
YSC 136 |
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Comp |
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Coord arcsec 2000 |
19 46 41.20 +44 20 54.7 |
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| Date first |
2010 |
|
Date last |
2019 |
|
Obs |
7 |
|
| Pa first |
323 |
|
Pa last |
286.9 |
|
P.A. Now (θ) |
211.1° |
|
| Sep first |
0.0 |
|
Sep last |
0.061 |
|
Sep. Now (ρ) |
0.047" |
|
| Mag pri |
7.40 |
|
Mag sec |
8.70 |
|
delta mag (ΔM) |
1.3 |
|
Spectral class |
G0 (yellow) |
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| Pri motion ra |
+133 |
|
Sec motion ra |
|
|
| Pri motion dec |
-001 |
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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 187160 |
|
Constellation |
Cygnus |
|
SAO |
48827 |
|
HIP |
97321 |
|
| Tycho2 |
3148-01691-1 |
|
Gaia DR2 |
2078929961307827200 |
|
HD |
187160 |
|
GC |
27386 |
|
| BD |
BD+43 3359 |
|
Distance |
40.23 |
|
Distance ly |
131.23 |
|
ORBITAL ELEMENTS
| Period (P) | 4.813y | ± 0.019 |
Periastron (T) | 2010.524y | ± 0.047 |
Semi-major axis (a) | 0.0831a | ± 0.0022 |
| Eccentricity (e) | 0.18 | ± 0.022 |
Inclination (i) | 64.3° | ± 1.3 |
Longitude of periastron (ω) | 261° | ± 3.7 |
| Node (Ω) | 89.9° | ± 1.7 |
Notes | n | |
Reference | Hor2021b | |
| Equinox | | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
267.1 |
0.079 |
| 2001 |
4.8 |
0.030 |
| 2002 |
91.7 |
0.084 |
| 2003 |
132.6 |
0.056 |
| 2004 |
231.7 |
0.058 |
| 2005 |
273.9 |
0.075 |
| 2006 |
43.1 |
0.038 |
| 2007 |
97.5 |
0.084 |
| 2008 |
147.8 |
0.048 |
| 2009 |
242.6 |
0.066 |
| 2010 |
282.0 |
0.067 |
| 2011 |
63.5 |
0.053 |
| 2012 |
103.4 |
0.081 |
| 2013 |
167.8 |
0.043 |
| 2014 |
251.1 |
0.073 |
| 2015 |
293.2 |
0.054 |
| 2016 |
75.1 |
0.066 |
| 2017 |
110.1 |
0.076 |
| 2018 |
190.4 |
0.043 |
| 2019 |
258.2 |
0.078 |
| 2020 |
312.4 |
0.040 |
| 2021 |
83.1 |
0.077 |
| 2022 |
118.1 |
0.068 |
| 2023 |
211.1 |
0.047 |
| 2024 |
264.8 |
0.080 |
| 2025 |
348.6 |
0.030 |
| 2026 |
89.6 |
0.083 |
| 2027 |
128.3 |
0.059 |
| 2028 |
227.2 |
0.055 |
| 2029 |
271.4 |
0.077 |
| 2030 |
32.1 |
0.034 |
|
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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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