18233+2731 HO 83 (HD 169433)
18h 23m 20.34s +27° 31' 24.1" P.A. 115.00 sep 0.8 mag 10.12,10.38 Sp F8
| Coord 2000 |
18233+2731 |
|
Discov num |
HO 83 |
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Comp |
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Coord arcsec 2000 |
18 23 20.34 +27 31 24.1 |
|
| Date first |
1884 |
|
Date last |
2016 |
|
Obs |
42 |
|
| Pa first |
82 |
|
Pa last |
114.8 |
|
P.A. Now (θ) |
114.8° |
|
| Sep first |
0.3 |
|
Sep last |
0.838 |
|
Sep. Now (ρ) |
0.838" |
|
| Mag pri |
10.12 |
|
Mag sec |
10.38 |
|
delta mag (ΔM) |
0.26 |
|
Spectral class |
F8 (yellow-white) |
|
| Pri motion ra |
+018 |
|
Sec motion ra |
+018 |
|
| Pri motion dec |
+001 |
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Sec motion dec |
+001 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 169433 |
|
Constellation |
Hercules |
|
SAO |
85996 |
|
Tycho2 |
2101-00066-1 |
|
| Gaia DR2 |
4586362929907460480 |
|
HD |
169433 |
|
ADS |
11313 |
|
ORBITAL ELEMENTS
| Period (P) | 1699.9512y | ± 856.3485 |
Periastron (T) | 2122.7256y | ± 289.5442 |
Semi-major axis (a) | 3.32499a | ± 2.11713 |
| Eccentricity (e) | 0.89251 | ± 0.09409 |
Inclination (i) | 82.876° | ± 10.883 |
Longitude of periastron (ω) | 72.564° | ± 33.505 |
| Node (Ω) | 133.152° | ± 56.425 |
Notes | | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
110.8 |
0.806 |
| 2001 |
111.0 |
0.808 |
| 2002 |
111.2 |
0.810 |
| 2003 |
111.4 |
0.812 |
| 2004 |
111.6 |
0.814 |
| 2005 |
111.8 |
0.816 |
| 2006 |
112.0 |
0.817 |
| 2007 |
112.2 |
0.819 |
| 2008 |
112.4 |
0.821 |
| 2009 |
112.6 |
0.823 |
| 2010 |
112.8 |
0.825 |
| 2011 |
113.0 |
0.827 |
| 2012 |
113.2 |
0.828 |
| 2013 |
113.3 |
0.830 |
| 2014 |
113.5 |
0.832 |
| 2015 |
113.7 |
0.834 |
| 2016 |
113.9 |
0.835 |
| 2017 |
114.1 |
0.837 |
| 2018 |
114.3 |
0.838 |
| 2019 |
114.5 |
0.840 |
| 2020 |
114.7 |
0.842 |
| 2021 |
114.8 |
0.843 |
| 2022 |
115.0 |
0.845 |
| 2023 |
115.2 |
0.846 |
| 2024 |
115.4 |
0.848 |
| 2025 |
115.6 |
0.849 |
| 2026 |
115.8 |
0.851 |
| 2027 |
115.9 |
0.852 |
| 2028 |
116.1 |
0.853 |
| 2029 |
116.3 |
0.855 |
| 2030 |
116.5 |
0.856 |
|
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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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