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 |
|
Discov num |
TOK 700 |
|
Comp |
|
|
Coord arcsec 2000 |
20 28 37.11 -04 25 40.2 |
|
| Date first |
2015 |
|
Date last |
2021 |
|
Obs |
9 |
|
| Pa first |
222 |
|
Pa last |
235.1 |
|
P.A. Now (θ) |
221.1° |
|
| Sep first |
0.1 |
|
Sep last |
0.119 |
|
Sep. Now (ρ) |
0.104" |
|
| Mag pri |
8.20 |
|
Mag sec |
9.00 |
|
delta mag (ΔM) |
0.8 |
|
Spectral class |
F8 (yellow-white) |
|
| Pri motion ra |
-011 |
|
Sec motion ra |
|
|
| Pri motion dec |
+029 |
|
Sec motion dec |
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| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 194976 |
|
Constellation |
Aquila |
|
SAO |
144474 |
|
HIP |
100998 |
|
| Tycho2 |
5171-01579-1 |
|
Gaia DR2 |
4218592851809850880 |
|
HD |
194976 |
|
GC |
28479 |
|
| BD |
BD-04 5147 |
|
Distance |
65.45 |
|
Distance ly |
213.5 |
|
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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