21410+2920 STT 448 (HD 206373)
21h 41m 00.68s +29° 20' 25.5" P.A. 31.00 sep 0.1 mag 8.93,9.17 Sp G0V dist. 103.95 pc (339.08 l.y.)
Coord 2000 |
21410+2920 |
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Discov num |
STT 448 |
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Comp |
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Coord arcsec 2000 |
21 41 00.68 +29 20 25.5 |
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Date first |
1843 |
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Date last |
2014 |
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Obs |
91 |
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Pa first |
245 |
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Pa last |
31.2 |
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P.A. Now (θ) |
10.5° |
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Sep first |
0.6 |
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Sep last |
0.1 |
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Sep. Now (ρ) |
0.164" |
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Mag pri |
8.93 |
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Mag sec |
9.17 |
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delta mag (ΔM) |
0.24 |
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Spectral class |
G0V (yellow) |
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Pri motion ra |
+073 |
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Sec motion ra |
+073 |
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Pri motion dec |
-014 |
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Sec motion dec |
-014 |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 206373 |
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Constellation |
Cygnus |
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SAO |
89904 |
|
HIP |
107060 |
|
Tycho2 |
2201-01184-1 |
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Gaia DR2 |
1849340525986765312 |
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HD |
206373 |
|
ADS |
15215 |
|
BD |
BD+28 4162 |
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Distance |
103.95 |
|
Distance ly |
339.08 |
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ORBITAL ELEMENTS
Period (P) | 244.2y | |
Periastron (T) | 2017.12y | |
Semi-major axis (a) | 0.482a | |
Eccentricity (e) | 0.699 | |
Inclination (i) | 133° | |
Longitude of periastron (ω) | 336.7° | |
Node (Ω) | 36.3° | |
Notes | | |
Reference | Alz2020c | |
Equinox | 2000 | |
Last observation | 2008 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
178.2 |
0.261 |
2001 |
175.6 |
0.247 |
2002 |
172.7 |
0.233 |
2003 |
169.4 |
0.219 |
2004 |
165.6 |
0.204 |
2005 |
161.4 |
0.191 |
2006 |
156.4 |
0.177 |
2007 |
150.6 |
0.164 |
2008 |
143.9 |
0.152 |
2009 |
136.1 |
0.141 |
2010 |
127.2 |
0.132 |
2011 |
117.1 |
0.126 |
2012 |
106.2 |
0.122 |
2013 |
94.9 |
0.121 |
2014 |
83.6 |
0.123 |
2015 |
72.8 |
0.127 |
2016 |
62.9 |
0.132 |
2017 |
53.7 |
0.138 |
2018 |
45.3 |
0.144 |
2019 |
37.6 |
0.149 |
2020 |
30.3 |
0.154 |
2021 |
23.4 |
0.158 |
2022 |
16.8 |
0.161 |
2023 |
10.5 |
0.164 |
2024 |
4.4 |
0.167 |
2025 |
358.4 |
0.169 |
2026 |
352.7 |
0.172 |
2027 |
347.2 |
0.176 |
2028 |
341.9 |
0.180 |
2029 |
336.9 |
0.184 |
2030 |
332.1 |
0.189 |
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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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