20267-4334 I 1420 (HD 194327)
20h 26m 44.38s -43° 33' 56.4" P.A. 358.00 sep 0.3 mag 9.38,9.61 Sp K0V dist. 45.54 pc (148.55 l.y.)
| Coord 2000 |
20267-4334 |
|
Discov num |
I 1420 |
|
Comp |
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Coord arcsec 2000 |
20 26 44.38 -43 33 56.4 |
|
| Date first |
1925 |
|
Date last |
2019 |
|
Obs |
25 |
|
| Pa first |
344 |
|
Pa last |
358.3 |
|
P.A. Now (θ) |
5.2° |
|
| Sep first |
0.7 |
|
Sep last |
0.302 |
|
Sep. Now (ρ) |
0.236" |
|
| Mag pri |
9.38 |
|
Mag sec |
9.61 |
|
delta mag (ΔM) |
0.23 |
|
Spectral class |
K0V (yellow-orange) |
|
| Pri motion ra |
+120 |
|
Sec motion ra |
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|
| Pri motion dec |
-114 |
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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 194327 |
|
Constellation |
Sagittarius |
|
SAO |
230207 |
|
HIP |
100836 |
|
| Tycho2 |
7961-01417-1 |
|
Gaia DR2 |
6679053545511522048 |
|
HD |
194327 |
|
CD |
CD-4313984 |
|
| CP |
CP-43 9228 |
|
Distance |
45.54 |
|
Distance ly |
148.55 |
|
ORBITAL ELEMENTS
| Period (P) | 77.81y | |
Periastron (T) | 1981.04y | |
Semi-major axis (a) | 0.446a | |
| Eccentricity (e) | 0.336 | |
Inclination (i) | 79.3° | |
Longitude of periastron (ω) | 61.6° | |
| Node (Ω) | 159.3° | |
Notes | | |
Reference | Doc2019d | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
340.4 |
0.485 |
| 2001 |
341.1 |
0.492 |
| 2002 |
341.7 |
0.496 |
| 2003 |
342.4 |
0.498 |
| 2004 |
343.0 |
0.498 |
| 2005 |
343.7 |
0.496 |
| 2006 |
344.3 |
0.492 |
| 2007 |
345.0 |
0.487 |
| 2008 |
345.7 |
0.480 |
| 2009 |
346.4 |
0.471 |
| 2010 |
347.1 |
0.461 |
| 2011 |
347.9 |
0.450 |
| 2012 |
348.7 |
0.437 |
| 2013 |
349.6 |
0.423 |
| 2014 |
350.5 |
0.408 |
| 2015 |
351.5 |
0.392 |
| 2016 |
352.6 |
0.375 |
| 2017 |
353.8 |
0.357 |
| 2018 |
355.2 |
0.338 |
| 2019 |
356.7 |
0.319 |
| 2020 |
358.4 |
0.299 |
| 2021 |
0.3 |
0.278 |
| 2022 |
2.5 |
0.257 |
| 2023 |
5.2 |
0.236 |
| 2024 |
8.4 |
0.214 |
| 2025 |
12.3 |
0.193 |
| 2026 |
17.1 |
0.172 |
| 2027 |
23.2 |
0.153 |
| 2028 |
31.0 |
0.135 |
| 2029 |
41.0 |
0.120 |
| 2030 |
53.2 |
0.110 |
|
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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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