19350+2328 A 162 (HD 184739)
19h 35m 01.71s +23° 28' 27.3" P.A. 306.00 sep 0.1 mag 8.73,8.77 Sp A0 dist. 155.76 pc (508.09 l.y.)
Coord 2000 |
19350+2328 |
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Discov num |
A 162 |
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Comp |
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Coord arcsec 2000 |
19 35 01.71 +23 28 27.3 |
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Date first |
1900 |
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Date last |
2019 |
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Obs |
74 |
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Pa first |
145 |
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Pa last |
305.7 |
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P.A. Now (θ) |
305.7° |
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Sep first |
0.2 |
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Sep last |
0.125 |
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Sep. Now (ρ) |
0.125" |
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Mag pri |
8.73 |
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Mag sec |
8.77 |
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delta mag (ΔM) |
0.04 |
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Spectral class |
A0 (white) |
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Pri motion ra |
+009 |
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Sec motion ra |
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Pri motion dec |
+006 |
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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 184739 |
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Constellation |
Vulpecula |
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SAO |
87387 |
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HIP |
96317 |
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Tycho2 |
2138-01993-1 |
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Gaia DR2 |
2020996109575128704 |
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HD |
184739 |
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ADS |
12631 |
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BD |
BD+23 3699 |
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Distance |
155.76 |
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Distance ly |
508.09 |
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ORBITAL ELEMENTS
Period (P) | 279y | ± 91 |
Periastron (T) | 2015y | ± 14 |
Semi-major axis (a) | 0.294a | ± 0.067 |
Eccentricity (e) | 0.33 | ± 0.11 |
Inclination (i) | 62.8° | ± 3.2 |
Longitude of periastron (ω) | 234° | ± 31 |
Node (Ω) | 77.9° | ± 4.5 |
Notes | n | |
Reference | Mdz2017 | |
Equinox | 2000 | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
264.8 |
0.203 |
2001 |
266.0 |
0.200 |
2002 |
267.2 |
0.196 |
2003 |
268.5 |
0.193 |
2004 |
269.8 |
0.189 |
2005 |
271.2 |
0.185 |
2006 |
272.6 |
0.180 |
2007 |
274.2 |
0.176 |
2008 |
275.8 |
0.171 |
2009 |
277.4 |
0.167 |
2010 |
279.2 |
0.162 |
2011 |
281.1 |
0.157 |
2012 |
283.1 |
0.152 |
2013 |
285.3 |
0.147 |
2014 |
287.6 |
0.142 |
2015 |
290.1 |
0.137 |
2016 |
292.7 |
0.132 |
2017 |
295.6 |
0.127 |
2018 |
298.7 |
0.122 |
2019 |
302.1 |
0.117 |
2020 |
305.7 |
0.113 |
2021 |
309.6 |
0.109 |
2022 |
313.8 |
0.105 |
2023 |
318.3 |
0.102 |
2024 |
323.1 |
0.099 |
2025 |
328.1 |
0.097 |
2026 |
333.3 |
0.095 |
2027 |
338.6 |
0.094 |
2028 |
344.1 |
0.094 |
2029 |
349.5 |
0.095 |
2030 |
354.8 |
0.096 |
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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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