19559+2500 COU 1037 (HD 339227)
19h 55m 53.36s +25° 00' 09.4" P.A. 153.00 sep 0.2 mag 9.80,10.70 Sp G0+G5
| Coord 2000 |
19559+2500 |
|
Discov num |
COU1037 |
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Comp |
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Coord arcsec 2000 |
19 55 53.36 +25 00 09.4 |
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| Date first |
1973 |
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Date last |
2014 |
|
Obs |
9 |
|
| Pa first |
155 |
|
Pa last |
153.2 |
|
P.A. Now (θ) |
153.2° |
|
| Sep first |
0.2 |
|
Sep last |
0.217 |
|
Sep. Now (ρ) |
0.217" |
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| Mag pri |
9.80 |
|
Mag sec |
10.70 |
|
delta mag (ΔM) |
0.9 |
|
Spectral class |
G0+G5 (yellow/yellow) |
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| Pri motion ra |
+026 |
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Sec motion ra |
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| Pri motion dec |
+019 |
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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 339227 |
|
Constellation |
Vulpecula |
|
SAO |
87944 |
|
Tycho2 |
2144-00996-1 |
|
| Gaia DR2 |
1834493717414000384 |
|
HD |
339227 |
|
ORBITAL ELEMENTS
| Period (P) | 39y | ± 0.4 |
Periastron (T) | 2001.45y | ± 0.1 |
Semi-major axis (a) | 0.157a | ± 0.01 |
| Eccentricity (e) | 0.292 | ± 0.012 |
Inclination (i) | 99° | ± 3.5 |
Longitude of periastron (ω) | 245.8° | ± 8 |
| Node (Ω) | 155.7° | ± 4 |
Notes | n | |
Reference | Doc2010h | |
| Equinox | 2000 | |
Last observation | 2007 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
328.1 |
0.087 |
| 2001 |
321.7 |
0.061 |
| 2002 |
304.6 |
0.033 |
| 2003 |
229.2 |
0.019 |
| 2004 |
180.3 |
0.042 |
| 2005 |
168.9 |
0.071 |
| 2006 |
164.0 |
0.097 |
| 2007 |
161.1 |
0.119 |
| 2008 |
159.0 |
0.138 |
| 2009 |
157.4 |
0.151 |
| 2010 |
156.0 |
0.161 |
| 2011 |
154.8 |
0.167 |
| 2012 |
153.6 |
0.170 |
| 2013 |
152.4 |
0.170 |
| 2014 |
151.2 |
0.166 |
| 2015 |
149.9 |
0.160 |
| 2016 |
148.5 |
0.152 |
| 2017 |
147.0 |
0.142 |
| 2018 |
145.1 |
0.131 |
| 2019 |
142.9 |
0.117 |
| 2020 |
140.1 |
0.103 |
| 2021 |
136.3 |
0.087 |
| 2022 |
130.8 |
0.071 |
| 2023 |
122.2 |
0.056 |
| 2024 |
107.2 |
0.041 |
| 2025 |
80.4 |
0.032 |
| 2026 |
45.3 |
0.032 |
| 2027 |
19.6 |
0.042 |
| 2028 |
5.2 |
0.057 |
| 2029 |
356.9 |
0.072 |
| 2030 |
351.5 |
0.087 |
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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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