20151+3742 COU 2416 (HD 192744)
20h 15m 04.77s +37° 41' 45.1" P.A. 128.00 sep 0.3 mag 8.00,8.50 Sp F0V
| Coord 2000 |
20151+3742 |
|
Discov num |
COU2416 |
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Comp |
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Coord arcsec 2000 |
20 15 04.77 +37 41 45.1 |
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| Date first |
1986 |
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Date last |
2014 |
|
Obs |
20 |
|
| Pa first |
232 |
|
Pa last |
128.2 |
|
P.A. Now (θ) |
128.2° |
|
| Sep first |
0.2 |
|
Sep last |
0.342 |
|
Sep. Now (ρ) |
0.342" |
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| Mag pri |
8.00 |
|
Mag sec |
8.50 |
|
delta mag (ΔM) |
0.5 |
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Spectral class |
F0V (yellow-white) |
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| Pri motion ra |
+034 |
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Sec motion ra |
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| Pri motion dec |
+024 |
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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 192744 |
|
Constellation |
Cygnus |
|
SAO |
69696 |
|
Tycho2 |
3151-01432-1 |
|
| Gaia DR2 |
2060847324369028224 |
|
HD |
192744 |
|
ORBITAL ELEMENTS
| Period (P) | 56.88y | |
Periastron (T) | 1995.77y | |
Semi-major axis (a) | 0.223a | |
| Eccentricity (e) | 0.477 | |
Inclination (i) | 37.8° | |
Longitude of periastron (ω) | 248.7° | |
| Node (Ω) | 95.7° | |
Notes | n | |
Reference | Doc2013g | |
| Equinox | 2000 | |
Last observation | 2009 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
62.7 |
0.138 |
| 2001 |
72.8 |
0.156 |
| 2002 |
80.9 |
0.173 |
| 2003 |
87.6 |
0.188 |
| 2004 |
93.3 |
0.202 |
| 2005 |
98.3 |
0.215 |
| 2006 |
102.8 |
0.226 |
| 2007 |
106.9 |
0.235 |
| 2008 |
110.7 |
0.244 |
| 2009 |
114.3 |
0.251 |
| 2010 |
117.7 |
0.257 |
| 2011 |
120.9 |
0.262 |
| 2012 |
124.1 |
0.267 |
| 2013 |
127.1 |
0.270 |
| 2014 |
130.1 |
0.273 |
| 2015 |
133.0 |
0.275 |
| 2016 |
135.8 |
0.276 |
| 2017 |
138.7 |
0.277 |
| 2018 |
141.5 |
0.278 |
| 2019 |
144.4 |
0.278 |
| 2020 |
147.2 |
0.277 |
| 2021 |
150.1 |
0.276 |
| 2022 |
152.9 |
0.275 |
| 2023 |
155.9 |
0.273 |
| 2024 |
158.8 |
0.271 |
| 2025 |
161.8 |
0.269 |
| 2026 |
164.9 |
0.266 |
| 2027 |
168.0 |
0.263 |
| 2028 |
171.2 |
0.260 |
| 2029 |
174.5 |
0.257 |
| 2030 |
177.8 |
0.253 |
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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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