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 |
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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 |
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|
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 |
|
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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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