19073+2432 A 262 (HD 178355)
19h 07m 18.39s +24° 31' 33.0" P.A. 269.00 sep 0.2 mag 9.27,9.72 Sp A2 dist. 308.64 pc (1006.78 l.y.)
Coord 2000 |
19073+2432 |
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Discov num |
A 262 |
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Comp |
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Coord arcsec 2000 |
19 07 18.39 +24 31 33.0 |
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Date first |
1901 |
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Date last |
2016 |
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Obs |
17 |
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Pa first |
90 |
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Pa last |
269.4 |
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P.A. Now (θ) |
269.4° |
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Sep first |
0.2 |
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Sep last |
0.167 |
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Sep. Now (ρ) |
0.167" |
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Mag pri |
9.27 |
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Mag sec |
9.72 |
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delta mag (ΔM) |
0.45 |
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Spectral class |
A2 (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 |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 178355 |
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Constellation |
Vulpecula |
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SAO |
86831 |
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HIP |
93905 |
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Tycho2 |
2127-01898-1 |
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Gaia DR2 |
4521612999402839808 |
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HD |
178355 |
|
ADS |
12057 |
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BD |
BD+24 3643 |
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Distance |
308.64 |
|
Distance ly |
1006.78 |
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ORBITAL ELEMENTS
Period (P) | 108.2y | |
Periastron (T) | 1959.1y | |
Semi-major axis (a) | 0.143a | |
Eccentricity (e) | 0.83 | |
Inclination (i) | 50.4° | |
Longitude of periastron (ω) | 122° | |
Node (Ω) | 136.2° | |
Notes | | |
Reference | Zir2012b | |
Equinox | 2000 | |
Last observation | 2007 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
81.7 |
0.179 |
2001 |
82.5 |
0.181 |
2002 |
83.2 |
0.183 |
2003 |
83.9 |
0.185 |
2004 |
84.6 |
0.186 |
2005 |
85.3 |
0.188 |
2006 |
86.0 |
0.189 |
2007 |
86.7 |
0.191 |
2008 |
87.3 |
0.192 |
2009 |
88.0 |
0.194 |
2010 |
88.6 |
0.195 |
2011 |
89.3 |
0.196 |
2012 |
89.9 |
0.197 |
2013 |
90.5 |
0.198 |
2014 |
91.1 |
0.199 |
2015 |
91.7 |
0.200 |
2016 |
92.3 |
0.200 |
2017 |
92.9 |
0.201 |
2018 |
93.5 |
0.201 |
2019 |
94.1 |
0.202 |
2020 |
94.7 |
0.202 |
2021 |
95.3 |
0.202 |
2022 |
95.9 |
0.203 |
2023 |
96.5 |
0.203 |
2024 |
97.1 |
0.202 |
2025 |
97.7 |
0.202 |
2026 |
98.3 |
0.202 |
2027 |
98.9 |
0.202 |
2028 |
99.5 |
0.201 |
2029 |
100.1 |
0.201 |
2030 |
100.7 |
0.200 |
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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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