20521+0205 A 2286 AB
20h 52m 08.54s +02° 05' 15.6" P.A. 5.00 sep 0.0 mag 9.14,9.30 Sp F0
| Coord 2000 |
20521+0205 |
|
Discov num |
A 2286 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 52 08.54 +02 05 15.6 |
|
| Date first |
1910 |
|
Date last |
2021 |
|
Obs |
13 |
|
| Pa first |
127 |
|
Pa last |
5.1 |
|
P.A. Now (θ) |
5.1° |
|
| Sep first |
0.3 |
|
Sep last |
0.047 |
|
Sep. Now (ρ) |
0.047" |
|
| Mag pri |
9.14 |
|
Mag sec |
9.30 |
|
delta mag (ΔM) |
0.16 |
|
Spectral class |
F0 (yellow-white) |
|
| Pri motion ra |
+016 |
|
Sec motion ra |
|
|
| Pri motion dec |
+010 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
20521+0205 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
126310 |
20 52 09 +02 05 16 |
A 2286 AB |
2021 |
13 |
5 |
0.0 |
9.14 |
9.30 |
0.16 |
Y |
<=== |
| Show |
HD 198706 |
126310 |
20 52 09 +02 05 16 |
A 2286 AB,C |
2021 |
21 |
48 |
1.1 |
9.14 |
10.09 |
0.95 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Aquarius |
|
SAO |
126310 |
|
Tycho2 |
0516-01427-1 |
|
Gaia DR2 |
1730803581854622592 |
|
| HD |
198706 |
|
ADS |
14372 |
|
ORBITAL ELEMENTS
| Period (P) | 273y | |
Periastron (T) | 2015.07y | |
Semi-major axis (a) | 0.311a | |
| Eccentricity (e) | 0.687 | |
Inclination (i) | 60.6° | |
Longitude of periastron (ω) | 226.8° | |
| Node (Ω) | 83.3° | |
Notes | | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | 2019 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
234.9 |
0.133 |
| 2001 |
237.5 |
0.132 |
| 2002 |
240.1 |
0.131 |
| 2003 |
242.7 |
0.130 |
| 2004 |
245.4 |
0.129 |
| 2005 |
248.2 |
0.127 |
| 2006 |
251.1 |
0.125 |
| 2007 |
254.0 |
0.123 |
| 2008 |
257.1 |
0.119 |
| 2009 |
260.4 |
0.115 |
| 2010 |
264.0 |
0.111 |
| 2011 |
267.9 |
0.105 |
| 2012 |
272.3 |
0.099 |
| 2013 |
277.3 |
0.092 |
| 2014 |
283.2 |
0.084 |
| 2015 |
290.3 |
0.076 |
| 2016 |
299.2 |
0.068 |
| 2017 |
310.3 |
0.061 |
| 2018 |
323.9 |
0.055 |
| 2019 |
339.5 |
0.053 |
| 2020 |
355.6 |
0.054 |
| 2021 |
10.1 |
0.058 |
| 2022 |
22.1 |
0.065 |
| 2023 |
31.6 |
0.074 |
| 2024 |
39.0 |
0.083 |
| 2025 |
44.8 |
0.093 |
| 2026 |
49.5 |
0.104 |
| 2027 |
53.3 |
0.114 |
| 2028 |
56.5 |
0.124 |
| 2029 |
59.3 |
0.135 |
| 2030 |
61.6 |
0.145 |
|
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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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