22180-6249 I 20 AB (HD 211299)
22h 18m 02.09s -62° 48' 40.8" P.A. 188.00 sep 0.7 mag 7.36,8.42 Sp F5V dist. 121.8 pc (397.31 l.y.)
Coord 2000 |
22180-6249 |
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Discov num |
I 20 |
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Comp |
AB |
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Coord arcsec 2000 |
22 18 02.09 -62 48 40.8 |
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Date first |
1894 |
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Date last |
2016 |
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Obs |
37 |
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Pa first |
320 |
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Pa last |
187.5 |
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P.A. Now (θ) |
187.5° |
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Sep first |
0.6 |
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Sep last |
0.65 |
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Sep. Now (ρ) |
0.65" |
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Mag pri |
7.36 |
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Mag sec |
8.42 |
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delta mag (ΔM) |
1.06 |
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Spectral class |
F5V (yellow-white) |
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Pri motion ra |
+001 |
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Sec motion ra |
+001 |
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Pri motion dec |
-003 |
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Sec motion dec |
-003 |
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Notes |
N
O
W
(See Notes, Orbital solution, ) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 211299 |
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Constellation |
Tucana |
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SAO |
255187 |
|
HIP |
110088 |
|
Tycho2 |
9120-00218-1 |
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HD |
211299 |
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GC |
31164 |
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CP |
CP-63 4769 |
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Distance |
121.8 |
|
Distance ly |
397.31 |
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SUSPECTED ORBITAL ELEMENTS
Identifier | 22180-6249 I 20 |
coord_arcsec_2000 | 221802.09-624840.8 |
Period (P) | 982.79y | ± 479.6 |
Periastron (T) | 2948.63y | ± 16.3 |
Semi-major axis (a) | 1.157a | ± 0.325 |
Eccentricity (e) | 0.526 | ± 0.258 |
Inclination (i) | 123° | ± 4.5 |
Longitude of periastron (ω) | 115.2° | ± 17.5 |
Node (Ω) | 4.2° | ± 0.8 |
Notes | n | |
Reference | Lin2004a | |
Equinox | 2000 | |
Last observation | 1996 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
195.8 |
0.580 |
2001 |
195.1 |
0.586 |
2002 |
194.5 |
0.592 |
2003 |
193.8 |
0.598 |
2004 |
193.2 |
0.604 |
2005 |
192.6 |
0.609 |
2006 |
192.0 |
0.615 |
2007 |
191.4 |
0.620 |
2008 |
190.8 |
0.625 |
2009 |
190.2 |
0.630 |
2010 |
189.7 |
0.636 |
2011 |
189.1 |
0.641 |
2012 |
188.5 |
0.646 |
2013 |
188.0 |
0.650 |
2014 |
187.5 |
0.655 |
2015 |
186.9 |
0.660 |
2016 |
186.4 |
0.664 |
2017 |
185.9 |
0.669 |
2018 |
185.4 |
0.673 |
2019 |
184.9 |
0.678 |
2020 |
184.4 |
0.682 |
2021 |
183.9 |
0.686 |
2022 |
183.5 |
0.690 |
2023 |
183.0 |
0.694 |
2024 |
182.5 |
0.698 |
2025 |
182.1 |
0.702 |
2026 |
181.6 |
0.705 |
2027 |
181.1 |
0.709 |
2028 |
180.7 |
0.713 |
2029 |
180.2 |
0.716 |
2030 |
179.8 |
0.719 |
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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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