19585+3317 STF 2606 AB (HD 189378)
19h 58m 32.66s +33° 16' 38.8" P.A. 146.00 sep 0.7 mag 7.74,8.43 Sp F2I/II+F dist. 78.43 pc (255.84 l.y.)
| Coord 2000 |
19585+3317 |
|
Discov num |
STF2606 |
|
Comp |
AB |
|
Coord arcsec 2000 |
19 58 32.66 +33 16 38.8 |
|
| Date first |
1832 |
|
Date last |
2018 |
|
Obs |
91 |
|
| Pa first |
131 |
|
Pa last |
146 |
|
P.A. Now (θ) |
146° |
|
| Sep first |
1.2 |
|
Sep last |
0.658 |
|
Sep. Now (ρ) |
0.658" |
|
| Mag pri |
7.74 |
|
Mag sec |
8.43 |
|
delta mag (ΔM) |
0.69 |
|
Spectral class |
F2I/II+F (yellow-white/yellow-white) |
|
| Pri motion ra |
+057 |
|
Sec motion ra |
+057 |
|
| Pri motion dec |
+051 |
|
Sec motion dec |
+051 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
19585+3317 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 189378 |
69186 |
19 58 33 +33 16 39 |
STF 2606 AB |
2018 |
91 |
146 |
0.7 |
7.74 |
8.43 |
0.69 |
Y |
<=== |
| Show |
|
69186 |
19 58 33 +33 16 39 |
GUI 29 AC |
2015 |
13 |
274 |
168.6 |
7.75 |
9.60 |
1.85 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 189378 |
|
Constellation |
Cygnus |
|
SAO |
69186 |
|
HIP |
98315 |
|
| Tycho2 |
2674-05369-1 |
|
Gaia DR2 |
2034389123260508672 |
|
HD |
189378 |
|
GC |
27675 |
|
| ADS |
13196 |
|
BD |
BD+32 3651 |
|
Distance |
78.43 |
|
Distance ly |
255.84 |
|
ORBITAL ELEMENTS
| Period (P) | 455y | |
Periastron (T) | 1745.7y | |
Semi-major axis (a) | 1.081a | |
| Eccentricity (e) | 0.69 | |
Inclination (i) | 82.4° | |
Longitude of periastron (ω) | 240.5° | |
| Node (Ω) | 127.4° | |
Notes | | |
Reference | Zir2015a | |
| Equinox | 2000 | |
Last observation | 2012 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
143.9 |
0.770 |
| 2001 |
144.0 |
0.764 |
| 2002 |
144.2 |
0.758 |
| 2003 |
144.3 |
0.752 |
| 2004 |
144.5 |
0.745 |
| 2005 |
144.7 |
0.739 |
| 2006 |
144.8 |
0.733 |
| 2007 |
145.0 |
0.727 |
| 2008 |
145.2 |
0.720 |
| 2009 |
145.3 |
0.714 |
| 2010 |
145.5 |
0.708 |
| 2011 |
145.7 |
0.701 |
| 2012 |
145.9 |
0.695 |
| 2013 |
146.0 |
0.688 |
| 2014 |
146.2 |
0.682 |
| 2015 |
146.4 |
0.675 |
| 2016 |
146.6 |
0.669 |
| 2017 |
146.8 |
0.662 |
| 2018 |
147.0 |
0.656 |
| 2019 |
147.2 |
0.649 |
| 2020 |
147.4 |
0.643 |
| 2021 |
147.7 |
0.636 |
| 2022 |
147.9 |
0.630 |
| 2023 |
148.1 |
0.623 |
| 2024 |
148.3 |
0.616 |
| 2025 |
148.6 |
0.610 |
| 2026 |
148.8 |
0.603 |
| 2027 |
149.1 |
0.596 |
| 2028 |
149.3 |
0.590 |
| 2029 |
149.6 |
0.583 |
| 2030 |
149.8 |
0.576 |
|
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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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