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 |
|
Discov num |
I 20 |
|
Comp |
AB |
|
Coord arcsec 2000 |
22 18 02.09 -62 48 40.8 |
|
| Date first |
1894 |
|
Date last |
2016 |
|
Obs |
37 |
|
| Pa first |
320 |
|
Pa last |
187.5 |
|
P.A. Now (θ) |
187.5° |
|
| Sep first |
0.6 |
|
Sep last |
0.65 |
|
Sep. Now (ρ) |
0.65" |
|
| Mag pri |
7.36 |
|
Mag sec |
8.42 |
|
delta mag (ΔM) |
1.06 |
|
Spectral class |
F5V (yellow-white) |
|
| Pri motion ra |
+001 |
|
Sec motion ra |
+001 |
|
| Pri motion dec |
-003 |
|
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 |
|
Constellation |
Tucana |
|
SAO |
255187 |
|
HIP |
110088 |
|
| Tycho2 |
9120-00218-1 |
|
HD |
211299 |
|
GC |
31164 |
|
CP |
CP-63 4769 |
|
| Distance |
121.8 |
|
Distance ly |
397.31 |
|
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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