20325-1637 SEE 512 (HD 195536)
20h 32m 31.57s -16° 36' 34.4" P.A. 127.00 sep 0.3 mag 7.94,8.04 Sp A7III+F0 dist. 102.88 pc (335.59 l.y.)
Coord 2000 |
20325-1637 |
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Discov num |
SEE 512 |
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Comp |
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Coord arcsec 2000 |
20 32 31.57 -16 36 34.4 |
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Date first |
1897 |
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Date last |
2021 |
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Obs |
38 |
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Pa first |
120 |
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Pa last |
126.8 |
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P.A. Now (θ) |
124° |
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Sep first |
0.4 |
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Sep last |
0.253 |
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Sep. Now (ρ) |
0.289" |
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Mag pri |
7.94 |
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Mag sec |
8.04 |
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delta mag (ΔM) |
0.1 |
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Spectral class |
A7III+F0 (white/yellow-white) |
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Pri motion ra |
+057 |
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Sec motion ra |
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Pri motion dec |
-012 |
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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 195536 |
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Constellation |
Capricornus |
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SAO |
163666 |
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HIP |
101357 |
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Tycho2 |
6330-01597-1 |
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HD |
195536 |
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GC |
28566 |
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ADS |
13961 |
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BD |
BD-17 6014 |
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Distance |
102.88 |
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Distance ly |
335.59 |
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ORBITAL ELEMENTS
Period (P) | 82.18y | ± 0.2 |
Periastron (T) | 1996.66y | ± 0.1 |
Semi-major axis (a) | 0.29a | ± 0.003 |
Eccentricity (e) | 0.031 | ± 0.004 |
Inclination (i) | 99.5° | ± 2 |
Longitude of periastron (ω) | 252.2° | ± 10 |
Node (Ω) | 125.8° | ± 3.5 |
Notes | n | |
Reference | Doc2010h | |
Equinox | 2000 | |
Last observation | 2007 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
229.1 |
0.048 |
2001 |
201.5 |
0.048 |
2002 |
178.9 |
0.058 |
2003 |
164.4 |
0.073 |
2004 |
155.2 |
0.091 |
2005 |
149.2 |
0.110 |
2006 |
144.9 |
0.129 |
2007 |
141.7 |
0.148 |
2008 |
139.2 |
0.166 |
2009 |
137.2 |
0.184 |
2010 |
135.6 |
0.200 |
2011 |
134.2 |
0.216 |
2012 |
133.0 |
0.230 |
2013 |
131.9 |
0.243 |
2014 |
130.9 |
0.255 |
2015 |
130.0 |
0.265 |
2016 |
129.2 |
0.273 |
2017 |
128.4 |
0.280 |
2018 |
127.6 |
0.286 |
2019 |
126.9 |
0.290 |
2020 |
126.1 |
0.292 |
2021 |
125.4 |
0.293 |
2022 |
124.7 |
0.292 |
2023 |
124.0 |
0.289 |
2024 |
123.3 |
0.285 |
2025 |
122.5 |
0.279 |
2026 |
121.7 |
0.272 |
2027 |
120.9 |
0.263 |
2028 |
120.0 |
0.253 |
2029 |
119.0 |
0.242 |
2030 |
117.9 |
0.230 |
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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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