20286-0426 TOK 700 (HD 194976)
20h 28m 37.11s -04° 25' 40.2" P.A. 235.00 sep 0.1 mag 8.20,9.00 Sp F8 dist. 65.45 pc (213.5 l.y.)
Coord 2000 |
20286-0426 |
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Discov num |
TOK 700 |
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Comp |
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Coord arcsec 2000 |
20 28 37.11 -04 25 40.2 |
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Date first |
2015 |
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Date last |
2021 |
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Obs |
9 |
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Pa first |
222 |
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Pa last |
235.1 |
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P.A. Now (θ) |
221.1° |
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Sep first |
0.1 |
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Sep last |
0.119 |
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Sep. Now (ρ) |
0.104" |
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Mag pri |
8.20 |
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Mag sec |
9.00 |
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delta mag (ΔM) |
0.8 |
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Spectral class |
F8 (yellow-white) |
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Pri motion ra |
-011 |
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Sec motion ra |
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Pri motion dec |
+029 |
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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 194976 |
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Constellation |
Aquila |
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SAO |
144474 |
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HIP |
100998 |
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Tycho2 |
5171-01579-1 |
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Gaia DR2 |
4218592851809850880 |
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HD |
194976 |
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GC |
28479 |
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BD |
BD-04 5147 |
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Distance |
65.45 |
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Distance ly |
213.5 |
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ORBITAL ELEMENTS
Period (P) | 7.327y | ± 0.233 |
Periastron (T) | 2017.954y | ± 0.038 |
Semi-major axis (a) | 0.069a | ± 0.003 |
Eccentricity (e) | 0.817 | ± 0.015 |
Inclination (i) | 152.4° | ± 6.6 |
Longitude of periastron (ω) | 47° | ± 12.2 |
Node (Ω) | 97.7° | ± 11.7 |
Notes | | |
Reference | Tok2021c | |
Equinox | 2000 | |
Last observation | 2021 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
231.0 |
0.116 |
2001 |
221.3 |
0.104 |
2002 |
206.9 |
0.078 |
2003 |
161.0 |
0.031 |
2004 |
272.4 |
0.060 |
2005 |
253.0 |
0.097 |
2006 |
242.6 |
0.114 |
2007 |
233.8 |
0.118 |
2008 |
224.7 |
0.109 |
2009 |
212.6 |
0.088 |
2010 |
186.6 |
0.049 |
2011 |
288.9 |
0.039 |
2012 |
257.6 |
0.088 |
2013 |
245.6 |
0.110 |
2014 |
236.6 |
0.118 |
2015 |
227.9 |
0.113 |
2016 |
217.2 |
0.097 |
2017 |
198.7 |
0.065 |
2018 |
15.0 |
0.012 |
2019 |
263.4 |
0.076 |
2020 |
249.0 |
0.105 |
2021 |
239.5 |
0.117 |
2022 |
230.8 |
0.116 |
2023 |
221.1 |
0.104 |
2024 |
206.5 |
0.077 |
2025 |
158.5 |
0.029 |
2026 |
271.8 |
0.061 |
2027 |
252.8 |
0.098 |
2028 |
242.4 |
0.115 |
2029 |
233.7 |
0.118 |
2030 |
224.5 |
0.109 |
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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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