21200+5259 STF 2789 AB (HD 203380)
21h 19m 58.84s +52° 58' 44.1" P.A. 113.00 sep 6.9 mag 7.71,7.87 Sp F8V
Coord 2000 |
21200+5259 |
|
Discov num |
STF2789 |
|
Comp |
AB |
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Coord arcsec 2000 |
21 19 58.84 +52 58 44.1 |
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Date first |
1828 |
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Date last |
2019 |
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Obs |
119 |
|
Pa first |
115 |
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Pa last |
113.2 |
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P.A. Now (θ) |
113.2° |
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Sep first |
6.1 |
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Sep last |
6.882 |
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Sep. Now (ρ) |
6.882" |
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Mag pri |
7.71 |
|
Mag sec |
7.87 |
|
delta mag (ΔM) |
0.16 |
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Spectral class |
F8V (yellow-white) |
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Pri motion ra |
+010 |
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Sec motion ra |
+009 |
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Pri motion dec |
+060 |
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Sec motion dec |
+056 |
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Notes |
O
W
T
(Orbital solution, , Parallax indicates physical) |
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rPM=0.068 (< 0.3, Physical double)
This double is physical.
21200+5259 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 203380 |
33334 |
21 19 59 +52 58 44 |
STF 2789 AB |
2019 |
119 |
113 |
6.9 |
7.71 |
7.87 |
0.16 |
Y |
<=== |
Show |
|
33334 |
21 19 59 +52 58 44 |
STF 2789 AC |
2015 |
8 |
171 |
133.1 |
7.71 |
12.53 |
4.82 |
|
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Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 203380 |
|
Constellation |
Cygnus |
|
SAO |
33334 |
|
Tycho2 |
3953-01414-1 |
|
Gaia DR2 |
2175444507873336448 |
|
HD |
203380 |
|
GC |
29876 |
|
ADS |
14878 |
|
ORBITAL ELEMENTS
Period (P) | 180c | |
Periastron (T) | 550y | |
Semi-major axis (a) | 12a | |
Eccentricity (e) | 0.54 | |
Inclination (i) | 96° | |
Longitude of periastron (ω) | 60° | |
Node (Ω) | 290° | |
Notes | | |
Reference | Kis2009 | |
Equinox | | |
Last observation | 2005 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
114.0 |
6.814 |
2001 |
114.0 |
6.819 |
2002 |
114.0 |
6.824 |
2003 |
114.0 |
6.830 |
2004 |
114.0 |
6.835 |
2005 |
114.0 |
6.840 |
2006 |
114.0 |
6.845 |
2007 |
114.0 |
6.850 |
2008 |
114.0 |
6.855 |
2009 |
114.0 |
6.860 |
2010 |
114.0 |
6.865 |
2011 |
114.0 |
6.870 |
2012 |
114.0 |
6.875 |
2013 |
114.0 |
6.880 |
2014 |
114.0 |
6.885 |
2015 |
113.9 |
6.890 |
2016 |
113.9 |
6.895 |
2017 |
113.9 |
6.900 |
2018 |
113.9 |
6.905 |
2019 |
113.9 |
6.910 |
2020 |
113.9 |
6.915 |
2021 |
113.9 |
6.920 |
2022 |
113.9 |
6.925 |
2023 |
113.9 |
6.930 |
2024 |
113.9 |
6.935 |
2025 |
113.9 |
6.940 |
2026 |
113.9 |
6.945 |
2027 |
113.9 |
6.950 |
2028 |
113.9 |
6.955 |
2029 |
113.9 |
6.960 |
2030 |
113.9 |
6.965 |
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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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