22342-1841 HU 389 (HD 213766)
22h 34m 10.47s -18° 41' 11.9" P.A. 330.00 sep 0.2 mag 9.90,9.24 Sp F7V dist. 409.84 pc (1336.9 l.y.)
| Coord 2000 |
22342-1841 |
|
Discov num |
HU 389 |
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Comp |
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Coord arcsec 2000 |
22 34 10.47 -18 41 11.9 |
|
| Date first |
1901 |
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Date last |
2019 |
|
Obs |
23 |
|
| Pa first |
103 |
|
Pa last |
330.3 |
|
P.A. Now (θ) |
341.5° |
|
| Sep first |
0.4 |
|
Sep last |
0.18 |
|
Sep. Now (ρ) |
0.175" |
|
| Mag pri |
9.90 |
|
Mag sec |
9.24 |
|
delta mag (ΔM) |
0.66 |
|
Spectral class |
F7V (yellow-white) |
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| Pri motion ra |
-023 |
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Sec motion ra |
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| Pri motion dec |
-012 |
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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
| Name |
HD 213766 |
|
Constellation |
Aquarius |
|
HIP |
11406 |
|
Tycho2 |
6388-00124-1 |
|
| Gaia DR2 |
2402068590384645376 |
|
HD |
213766 |
|
ADS |
16056 |
|
BD |
BD-19 6299 |
|
| Distance |
409.84 |
|
Distance ly |
1336.9 |
|
ORBITAL ELEMENTS
| Period (P) | 186y | ± 12.2 |
Periastron (T) | 2006.32y | ± 1.24 |
Semi-major axis (a) | 0.2995a | ± 0.0085 |
| Eccentricity (e) | 0.417 | ± 0.024 |
Inclination (i) | 50.6° | ± 1.7 |
Longitude of periastron (ω) | 158.9° | ± 2.8 |
| Node (Ω) | 122.5° | ± 2.6 |
Notes | | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | 2019 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
262.6 |
0.144 |
| 2001 |
267.3 |
0.148 |
| 2002 |
271.8 |
0.152 |
| 2003 |
276.0 |
0.155 |
| 2004 |
280.1 |
0.159 |
| 2005 |
283.9 |
0.163 |
| 2006 |
287.6 |
0.167 |
| 2007 |
291.1 |
0.170 |
| 2008 |
294.5 |
0.173 |
| 2009 |
297.8 |
0.175 |
| 2010 |
301.1 |
0.177 |
| 2011 |
304.2 |
0.179 |
| 2012 |
307.3 |
0.180 |
| 2013 |
310.4 |
0.181 |
| 2014 |
313.4 |
0.181 |
| 2015 |
316.5 |
0.182 |
| 2016 |
319.5 |
0.181 |
| 2017 |
322.6 |
0.181 |
| 2018 |
325.7 |
0.180 |
| 2019 |
328.8 |
0.179 |
| 2020 |
331.9 |
0.178 |
| 2021 |
335.1 |
0.177 |
| 2022 |
338.3 |
0.176 |
| 2023 |
341.5 |
0.175 |
| 2024 |
344.8 |
0.174 |
| 2025 |
348.1 |
0.173 |
| 2026 |
351.5 |
0.172 |
| 2027 |
354.9 |
0.172 |
| 2028 |
358.3 |
0.172 |
| 2029 |
1.7 |
0.171 |
| 2030 |
5.1 |
0.172 |
|
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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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