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 |
|
Discov num |
A 262 |
|
Comp |
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Coord arcsec 2000 |
19 07 18.39 +24 31 33.0 |
|
| Date first |
1901 |
|
Date last |
2016 |
|
Obs |
17 |
|
| Pa first |
90 |
|
Pa last |
269.4 |
|
P.A. Now (θ) |
269.4° |
|
| Sep first |
0.2 |
|
Sep last |
0.167 |
|
Sep. Now (ρ) |
0.167" |
|
| Mag pri |
9.27 |
|
Mag sec |
9.72 |
|
delta mag (ΔM) |
0.45 |
|
Spectral class |
A2 (white) |
|
| Pri motion ra |
+009 |
|
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 |
|
Constellation |
Vulpecula |
|
SAO |
86831 |
|
HIP |
93905 |
|
| Tycho2 |
2127-01898-1 |
|
Gaia DR2 |
4521612999402839808 |
|
HD |
178355 |
|
ADS |
12057 |
|
| BD |
BD+24 3643 |
|
Distance |
308.64 |
|
Distance ly |
1006.78 |
|
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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