17036+6948 A 1146 (HD 155090)
17h 03m 38.52s +69° 47' 53.4" P.A. 104.00 sep 0.3 mag 8.15,9.80 Sp F5 dist. 88.03 pc (287.15 l.y.)
Coord 2000 |
17036+6948 |
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Discov num |
A 1146 |
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Comp |
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Coord arcsec 2000 |
17 03 38.52 +69 47 53.4 |
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Date first |
1905 |
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Date last |
2011 |
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Obs |
36 |
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Pa first |
316 |
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Pa last |
104.2 |
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P.A. Now (θ) |
75.3° |
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Sep first |
0.3 |
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Sep last |
0.325 |
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Sep. Now (ρ) |
0.117" |
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Mag pri |
8.15 |
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Mag sec |
9.80 |
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delta mag (ΔM) |
1.65 |
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Spectral class |
F5 (yellow-white) |
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Pri motion ra |
-027 |
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Sec motion ra |
-027 |
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Pri motion dec |
+070 |
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Sec motion dec |
+070 |
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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 155090 |
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Constellation |
Draco |
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SAO |
17341 |
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HIP |
83477 |
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Tycho2 |
4420-01019-1 |
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HD |
155090 |
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ADS |
10340 |
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BD |
BD+69 891 |
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Distance |
88.03 |
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Distance ly |
287.15 |
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ORBITAL ELEMENTS
Period (P) | 133.81y | |
Periastron (T) | 2024.05y | |
Semi-major axis (a) | 0.411a | |
Eccentricity (e) | 0.055 | |
Inclination (i) | 102° | |
Longitude of periastron (ω) | 80.3° | |
Node (Ω) | 117.6° | |
Notes | n | |
Reference | USN2007b | |
Equinox | 2000 | |
Last observation | 2004 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
115.6 |
0.397 |
2001 |
115.0 |
0.392 |
2002 |
114.3 |
0.387 |
2003 |
113.7 |
0.380 |
2004 |
113.0 |
0.373 |
2005 |
112.3 |
0.365 |
2006 |
111.6 |
0.356 |
2007 |
110.8 |
0.346 |
2008 |
110.0 |
0.336 |
2009 |
109.2 |
0.325 |
2010 |
108.2 |
0.313 |
2011 |
107.2 |
0.300 |
2012 |
106.1 |
0.287 |
2013 |
104.9 |
0.273 |
2014 |
103.6 |
0.258 |
2015 |
102.1 |
0.243 |
2016 |
100.4 |
0.227 |
2017 |
98.4 |
0.212 |
2018 |
96.1 |
0.196 |
2019 |
93.4 |
0.179 |
2020 |
90.2 |
0.163 |
2021 |
86.3 |
0.147 |
2022 |
81.4 |
0.132 |
2023 |
75.3 |
0.117 |
2024 |
67.5 |
0.104 |
2025 |
57.6 |
0.093 |
2026 |
45.5 |
0.085 |
2027 |
31.6 |
0.081 |
2028 |
17.3 |
0.082 |
2029 |
4.1 |
0.088 |
2030 |
353.0 |
0.097 |
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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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