21223+2906 COU 532
21h 22m 19.57s +29° 06' 23.1" P.A. 45.00 sep 0.4 mag 9.50,9.50 Sp G0
Coord 2000 |
21223+2906 |
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Discov num |
COU 532 |
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Comp |
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Coord arcsec 2000 |
21 22 19.57 +29 06 23.1 |
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Date first |
1970 |
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Date last |
2016 |
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Obs |
21 |
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Pa first |
78 |
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Pa last |
45 |
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P.A. Now (θ) |
45° |
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Sep first |
0.1 |
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Sep last |
0.387 |
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Sep. Now (ρ) |
0.387" |
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Mag pri |
9.50 |
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Mag sec |
9.50 |
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delta mag (ΔM) |
0 |
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Spectral class |
G0 (yellow) |
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Pri motion ra |
+030 |
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Sec motion ra |
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Pri motion dec |
+015 |
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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
Constellation |
Cygnus |
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Tycho2 |
2199-00128-1 |
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Gaia DR2 |
1848618245631059456 |
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ORBITAL ELEMENTS
Period (P) | 556.1y | ± 91 |
Periastron (T) | 1959.3y | ± 2.5 |
Semi-major axis (a) | 0.494a | ± 0.052 |
Eccentricity (e) | 0.5669 | ± 0.033 |
Inclination (i) | 119.3° | ± 1.4 |
Longitude of periastron (ω) | 258.1° | ± 8.4 |
Node (Ω) | 45.4° | ± 1 |
Notes | | |
Reference | BAE2021 | |
Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
53.5 |
0.311 |
2001 |
52.9 |
0.317 |
2002 |
52.3 |
0.322 |
2003 |
51.7 |
0.327 |
2004 |
51.1 |
0.331 |
2005 |
50.5 |
0.336 |
2006 |
50.0 |
0.341 |
2007 |
49.4 |
0.345 |
2008 |
48.9 |
0.350 |
2009 |
48.4 |
0.354 |
2010 |
47.9 |
0.359 |
2011 |
47.4 |
0.363 |
2012 |
46.9 |
0.367 |
2013 |
46.4 |
0.371 |
2014 |
46.0 |
0.375 |
2015 |
45.5 |
0.379 |
2016 |
45.1 |
0.382 |
2017 |
44.7 |
0.386 |
2018 |
44.2 |
0.390 |
2019 |
43.8 |
0.393 |
2020 |
43.4 |
0.396 |
2021 |
43.0 |
0.400 |
2022 |
42.6 |
0.403 |
2023 |
42.2 |
0.406 |
2024 |
41.8 |
0.409 |
2025 |
41.5 |
0.412 |
2026 |
41.1 |
0.415 |
2027 |
40.7 |
0.418 |
2028 |
40.4 |
0.421 |
2029 |
40.0 |
0.424 |
2030 |
39.7 |
0.427 |
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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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