20248-1943 HDS 2919 (HD 194169)
20h 24m 46.66s -19° 42' 35.9" P.A. 277.00 sep 0.1 mag 9.93,10.72 Sp K3V dist. 54.53 pc (177.88 l.y.)
Coord 2000 |
20248-1943 |
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Discov num |
HDS2919 |
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Comp |
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Coord arcsec 2000 |
20 24 46.66 -19 42 35.9 |
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Date first |
1991 |
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Date last |
2021 |
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Obs |
14 |
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Pa first |
66 |
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Pa last |
276.9 |
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P.A. Now (θ) |
320.3° |
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Sep first |
0.4 |
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Sep last |
0.091 |
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Sep. Now (ρ) |
0.085" |
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Mag pri |
9.93 |
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Mag sec |
10.72 |
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delta mag (ΔM) |
0.79 |
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Spectral class |
K3V (yellow-orange) |
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Pri motion ra |
+043 |
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Sec motion ra |
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Pri motion dec |
-011 |
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Sec motion dec |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 194169 |
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Constellation |
Capricornus |
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SAO |
163540 |
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HIP |
100685 |
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Tycho2 |
6337-01640-1 |
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Gaia DR2 |
6860285329861972096 |
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HD |
194169 |
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BD |
BD-20 5925 |
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Distance |
54.53 |
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Distance ly |
177.88 |
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ORBITAL ELEMENTS
Period (P) | 44.88y | ± 1.47 |
Periastron (T) | 2020.99y | ± 0.08 |
Semi-major axis (a) | 0.265a | ± 0.003 |
Eccentricity (e) | 0.625 | ± 0.009 |
Inclination (i) | 53.6° | ± 1.5 |
Longitude of periastron (ω) | 183.5° | ± 4.4 |
Node (Ω) | 74.2° | ± 1.6 |
Notes | | |
Reference | Tok2021c | |
Equinox | 2000 | |
Last observation | 2021 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
78.3 |
0.427 |
2001 |
79.8 |
0.423 |
2002 |
81.3 |
0.418 |
2003 |
82.8 |
0.410 |
2004 |
84.4 |
0.401 |
2005 |
86.0 |
0.390 |
2006 |
87.8 |
0.377 |
2007 |
89.7 |
0.363 |
2008 |
91.8 |
0.346 |
2009 |
94.1 |
0.328 |
2010 |
96.7 |
0.307 |
2011 |
99.6 |
0.285 |
2012 |
103.2 |
0.261 |
2013 |
107.4 |
0.234 |
2014 |
112.8 |
0.206 |
2015 |
119.9 |
0.177 |
2016 |
130.0 |
0.147 |
2017 |
145.0 |
0.119 |
2018 |
167.9 |
0.097 |
2019 |
198.7 |
0.090 |
2020 |
229.6 |
0.096 |
2021 |
256.5 |
0.099 |
2022 |
285.2 |
0.090 |
2023 |
320.3 |
0.085 |
2024 |
352.8 |
0.098 |
2025 |
14.2 |
0.126 |
2026 |
27.4 |
0.157 |
2027 |
36.2 |
0.190 |
2028 |
42.4 |
0.220 |
2029 |
47.1 |
0.249 |
2030 |
50.9 |
0.275 |
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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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