18068-4325 HJ 5014 (HD 165189)
18h 06m 49.91s -43° 25' 30.0" sep 1.8 mag 5.65,5.68 Sp A5V+A5V dist. 41.84 pc (136.48 l.y.)
Coord 2000 |
18068-4325 |
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Discov num |
HJ 5014 |
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Comp |
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Coord arcsec 2000 |
18 06 49.91 -43 25 30.0 |
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Date first |
1836 |
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Date last |
2019 |
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Obs |
129 |
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Pa first |
249 |
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Pa last |
0.1 |
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P.A. Now (θ) |
0.1° |
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Sep first |
1.0 |
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Sep last |
1.798 |
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Sep. Now (ρ) |
1.798" |
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Mag pri |
5.65 |
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Mag sec |
5.68 |
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delta mag (ΔM) |
0.03 |
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Spectral class |
A5V+A5V (white/white) |
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Pri motion ra |
+014 |
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Sec motion ra |
+014 |
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Pri motion dec |
-105 |
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Sec motion dec |
-105 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 165189 |
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Constellation |
Corona Austrina |
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SAO |
228708 |
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HIP |
88726 |
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Tycho2 |
7911-05035-1 |
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Gaia DR2 |
6724105656508792576 |
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HD |
165189 |
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HR |
6749 |
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GC |
24649 |
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CD |
CD-4312272 |
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CP |
CP-43 8434 |
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Distance |
41.84 |
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Distance ly |
136.48 |
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ORBITAL ELEMENTS
Period (P) | 450y | |
Periastron (T) | 1854.7y | |
Semi-major axis (a) | 2.04a | |
Eccentricity (e) | 0.65 | |
Inclination (i) | 123.1° | |
Longitude of periastron (ω) | 282.7° | |
Node (Ω) | 85.8° | |
Notes | n | |
Reference | Ary2001a | |
Equinox | 2000 | |
Last observation | 1999 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
7.2 |
1.693 |
2001 |
6.7 |
1.695 |
2002 |
6.2 |
1.698 |
2003 |
5.7 |
1.700 |
2004 |
5.3 |
1.703 |
2005 |
4.8 |
1.705 |
2006 |
4.3 |
1.708 |
2007 |
3.8 |
1.710 |
2008 |
3.4 |
1.713 |
2009 |
2.9 |
1.715 |
2010 |
2.4 |
1.718 |
2011 |
2.0 |
1.721 |
2012 |
1.5 |
1.723 |
2013 |
1.0 |
1.726 |
2014 |
0.6 |
1.729 |
2015 |
0.1 |
1.731 |
2016 |
359.6 |
1.734 |
2017 |
359.2 |
1.737 |
2018 |
358.7 |
1.740 |
2019 |
358.3 |
1.743 |
2020 |
357.8 |
1.745 |
2021 |
357.4 |
1.748 |
2022 |
356.9 |
1.751 |
2023 |
356.5 |
1.754 |
2024 |
356.0 |
1.757 |
2025 |
355.6 |
1.760 |
2026 |
355.1 |
1.763 |
2027 |
354.7 |
1.766 |
2028 |
354.2 |
1.769 |
2029 |
353.8 |
1.772 |
2030 |
353.4 |
1.775 |
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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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