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 |
2031 |
282.4 |
0.885 |
2032 |
282.3 |
0.880 |
2033 |
282.3 |
0.875 |
2034 |
282.2 |
0.870 |
2035 |
282.1 |
0.865 |
2036 |
282.0 |
0.860 |
2037 |
281.9 |
0.855 |
2038 |
281.8 |
0.850 |
2039 |
281.7 |
0.845 |
2040 |
281.7 |
0.840 |
2041 |
281.6 |
0.835 |
2042 |
281.5 |
0.830 |
2043 |
281.4 |
0.825 |
2044 |
281.3 |
0.820 |
2045 |
281.2 |
0.814 |
2046 |
281.1 |
0.809 |
2047 |
281.0 |
0.804 |
2048 |
280.9 |
0.799 |
2049 |
280.8 |
0.793 |
2050 |
280.7 |
0.788 |
|
|

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|

Measures: green=micrometric, blue=interferometric, purple=photographic |
|