18558+0327 A 2192 (HD 175543)
18h 55m 48.63s +03° 26' 59.3" P.A. 319.00 sep 0.2 mag 7.73,8.00 Sp A5V dist. 143.06 pc (466.66 l.y.)
Coord 2000 |
18558+0327 |
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Discov num |
A 2192 |
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Comp |
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Coord arcsec 2000 |
18 55 48.63 +03 26 59.3 |
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Date first |
1910 |
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Date last |
2021 |
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Obs |
91 |
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Pa first |
241 |
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Pa last |
319.2 |
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P.A. Now (θ) |
313.2° |
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Sep first |
0.3 |
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Sep last |
0.162 |
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Sep. Now (ρ) |
0.177" |
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Mag pri |
7.73 |
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Mag sec |
8.00 |
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delta mag (ΔM) |
0.27 |
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Spectral class |
A5V (white) |
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Pri motion ra |
+021 |
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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 |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 175543 |
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Constellation |
Serpens |
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SAO |
124058 |
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HIP |
92909 |
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Tycho2 |
0453-00517-1 |
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Gaia DR2 |
4280809129586710528 |
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HD |
175543 |
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GC |
25975 |
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ADS |
11842 |
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BD |
BD+03 3836 |
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Distance |
143.06 |
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Distance ly |
466.66 |
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ORBITAL ELEMENTS
Period (P) | 154.2y | ± 9.7 |
Periastron (T) | 2008.3y | ± 2.9 |
Semi-major axis (a) | 0.295a | ± 0.015 |
Eccentricity (e) | 0.222 | ± 0.024 |
Inclination (i) | 129.3° | ± 1.8 |
Longitude of periastron (ω) | 63° | ± 11 |
Node (Ω) | 80.2° | ± 1.1 |
Notes | n | |
Reference | Mdz2017 | |
Equinox | 2000 | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
58.4 |
0.214 |
2001 |
55.6 |
0.209 |
2002 |
52.6 |
0.203 |
2003 |
49.4 |
0.197 |
2004 |
46.1 |
0.191 |
2005 |
42.5 |
0.185 |
2006 |
38.7 |
0.179 |
2007 |
34.7 |
0.173 |
2008 |
30.4 |
0.168 |
2009 |
25.8 |
0.163 |
2010 |
20.9 |
0.158 |
2011 |
15.8 |
0.155 |
2012 |
10.4 |
0.152 |
2013 |
4.9 |
0.150 |
2014 |
359.2 |
0.148 |
2015 |
353.5 |
0.148 |
2016 |
347.8 |
0.149 |
2017 |
342.2 |
0.150 |
2018 |
336.7 |
0.153 |
2019 |
331.5 |
0.156 |
2020 |
326.5 |
0.161 |
2021 |
321.8 |
0.166 |
2022 |
317.3 |
0.171 |
2023 |
313.2 |
0.177 |
2024 |
309.3 |
0.183 |
2025 |
305.7 |
0.190 |
2026 |
302.3 |
0.196 |
2027 |
299.2 |
0.203 |
2028 |
296.2 |
0.210 |
2029 |
293.5 |
0.217 |
2030 |
290.9 |
0.224 |
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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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