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 |
|
Discov num |
STT 448 |
|
Comp |
|
|
Coord arcsec 2000 |
21 41 00.68 +29 20 25.5 |
|
| Date first |
1843 |
|
Date last |
2014 |
|
Obs |
91 |
|
| Pa first |
245 |
|
Pa last |
31.2 |
|
P.A. Now (θ) |
10.5° |
|
| Sep first |
0.6 |
|
Sep last |
0.1 |
|
Sep. Now (ρ) |
0.164" |
|
| Mag pri |
8.93 |
|
Mag sec |
9.17 |
|
delta mag (ΔM) |
0.24 |
|
Spectral class |
G0V (yellow) |
|
| Pri motion ra |
+073 |
|
Sec motion ra |
+073 |
|
| Pri motion dec |
-014 |
|
Sec motion dec |
-014 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 206373 |
|
Constellation |
Cygnus |
|
SAO |
89904 |
|
HIP |
107060 |
|
| Tycho2 |
2201-01184-1 |
|
Gaia DR2 |
1849340525986765312 |
|
HD |
206373 |
|
ADS |
15215 |
|
| BD |
BD+28 4162 |
|
Distance |
103.95 |
|
Distance ly |
339.08 |
|
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 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
