19550+4152 HO 581 (HD 188753)
19h 54m 58.40s +41° 52' 17.6" P.A. 230.00 sep 0.1 mag 8.03,8.72 Sp G9V dist. 46.23 pc (150.8 l.y.)
| Coord 2000 |
19550+4152 |
|
Discov num |
HO 581 |
|
Comp |
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Coord arcsec 2000 |
19 54 58.40 +41 52 17.6 |
|
| Date first |
1895 |
|
Date last |
2012 |
|
Obs |
120 |
|
| Pa first |
258 |
|
Pa last |
229.7 |
|
P.A. Now (θ) |
75.7° |
|
| Sep first |
0.3 |
|
Sep last |
0.115 |
|
Sep. Now (ρ) |
0.351" |
|
| Mag pri |
8.03 |
|
Mag sec |
8.72 |
|
delta mag (ΔM) |
0.69 |
|
Spectral class |
G9V (yellow) |
|
| Pri motion ra |
-044 |
|
Sec motion ra |
|
|
| Pri motion dec |
+293 |
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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 188753 |
|
Constellation |
Cygnus |
|
SAO |
48968 |
|
HIP |
98001 |
|
| Tycho2 |
3145-00504-1 |
|
Gaia DR2 |
2075398256940805248 |
|
HD |
188753 |
|
ADS |
13125 |
|
| BD |
BD+41 3535 |
|
Distance |
46.23 |
|
Distance ly |
150.8 |
|
ORBITAL ELEMENTS
| Period (P) | 25.63y | ± 0.04 |
Periastron (T) | 1988.1y | ± 0.1 |
Semi-major axis (a) | 258.7m | ± 2.8 |
| Eccentricity (e) | 0.502 | ± 0.008 |
Inclination (i) | 31.1° | ± 1.5 |
Longitude of periastron (ω) | 233.8° | ± 1.3 |
| Node (Ω) | 45.7° | ± 1.1 |
Notes | n | |
Reference | XXX2018c | |
| Equinox | 2000 | |
Last observation | 2006 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
90.1 |
0.357 |
| 2001 |
95.7 |
0.353 |
| 2002 |
101.3 |
0.346 |
| 2003 |
107.3 |
0.337 |
| 2004 |
113.7 |
0.325 |
| 2005 |
120.6 |
0.311 |
| 2006 |
128.2 |
0.294 |
| 2007 |
136.7 |
0.276 |
| 2008 |
146.5 |
0.257 |
| 2009 |
158.0 |
0.236 |
| 2010 |
171.8 |
0.214 |
| 2011 |
188.9 |
0.190 |
| 2012 |
211.1 |
0.164 |
| 2013 |
242.5 |
0.135 |
| 2014 |
289.3 |
0.114 |
| 2015 |
338.2 |
0.132 |
| 2016 |
8.8 |
0.174 |
| 2017 |
27.1 |
0.218 |
| 2018 |
39.6 |
0.255 |
| 2019 |
49.1 |
0.286 |
| 2020 |
56.9 |
0.310 |
| 2021 |
63.7 |
0.328 |
| 2022 |
69.9 |
0.342 |
| 2023 |
75.7 |
0.351 |
| 2024 |
81.2 |
0.356 |
| 2025 |
86.7 |
0.357 |
| 2026 |
92.2 |
0.356 |
| 2027 |
97.7 |
0.351 |
| 2028 |
103.5 |
0.343 |
| 2029 |
109.6 |
0.332 |
| 2030 |
116.2 |
0.320 |
|
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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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