20548+3242 STT 418 (HD 199220)
20h 54m 49.84s +32° 42' 23.2" P.A. 283.00 sep 0.9 mag 8.23,8.27 Sp G0 dist. 60.72 pc (198.07 l.y.)
| Coord 2000 |
20548+3242 |
|
Discov num |
STT 418 |
|
Comp |
|
|
Coord arcsec 2000 |
20 54 49.84 +32 42 23.2 |
|
| Date first |
1842 |
|
Date last |
2018 |
|
Obs |
160 |
|
| Pa first |
294 |
|
Pa last |
283.2 |
|
P.A. Now (θ) |
283.2° |
|
| Sep first |
0.6 |
|
Sep last |
0.936 |
|
Sep. Now (ρ) |
0.936" |
|
| Mag pri |
8.23 |
|
Mag sec |
8.27 |
|
delta mag (ΔM) |
0.04 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
+067 |
|
Sec motion ra |
+067 |
|
| Pri motion dec |
+048 |
|
Sec motion dec |
+048 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 199220 |
|
Constellation |
Cygnus |
|
SAO |
70660 |
|
HIP |
103232 |
|
| Tycho2 |
2692-02310-1 |
|
Gaia DR2 |
1865846257114183296 |
|
HD |
199220 |
|
ADS |
14421 |
|
| BD |
BD+32 3984 |
|
Distance |
60.72 |
|
Distance ly |
198.07 |
|
ORBITAL ELEMENTS
| Period (P) | 709.1513y | ± 311.6746 |
Periastron (T) | 1830.4654y | ± 9.9012 |
Semi-major axis (a) | 1.6542a | ± 0.48472 |
| Eccentricity (e) | 0.67646 | ± 0.10033 |
Inclination (i) | 93.603° | ± 0.907 |
Longitude of periastron (ω) | 91.16° | ± 21.165 |
| Node (Ω) | 111.511° | ± 1.408 |
Notes | | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
284.6 |
1.026 |
| 2001 |
284.6 |
1.022 |
| 2002 |
284.5 |
1.018 |
| 2003 |
284.4 |
1.014 |
| 2004 |
284.4 |
1.009 |
| 2005 |
284.3 |
1.005 |
| 2006 |
284.2 |
1.001 |
| 2007 |
284.2 |
0.996 |
| 2008 |
284.1 |
0.992 |
| 2009 |
284.0 |
0.988 |
| 2010 |
284.0 |
0.983 |
| 2011 |
283.9 |
0.979 |
| 2012 |
283.8 |
0.975 |
| 2013 |
283.8 |
0.970 |
| 2014 |
283.7 |
0.966 |
| 2015 |
283.6 |
0.961 |
| 2016 |
283.6 |
0.956 |
| 2017 |
283.5 |
0.952 |
| 2018 |
283.4 |
0.947 |
| 2019 |
283.4 |
0.943 |
| 2020 |
283.3 |
0.938 |
| 2021 |
283.2 |
0.933 |
| 2022 |
283.1 |
0.929 |
| 2023 |
283.1 |
0.924 |
| 2024 |
283.0 |
0.919 |
| 2025 |
282.9 |
0.914 |
| 2026 |
282.8 |
0.910 |
| 2027 |
282.8 |
0.905 |
| 2028 |
282.7 |
0.900 |
| 2029 |
282.6 |
0.895 |
| 2030 |
282.5 |
0.890 |
|
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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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