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 |
|
Discov num |
A 1146 |
|
Comp |
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Coord arcsec 2000 |
17 03 38.52 +69 47 53.4 |
|
| Date first |
1905 |
|
Date last |
2011 |
|
Obs |
36 |
|
| Pa first |
316 |
|
Pa last |
104.2 |
|
P.A. Now (θ) |
75.3° |
|
| Sep first |
0.3 |
|
Sep last |
0.325 |
|
Sep. Now (ρ) |
0.117" |
|
| Mag pri |
8.15 |
|
Mag sec |
9.80 |
|
delta mag (ΔM) |
1.65 |
|
Spectral class |
F5 (yellow-white) |
|
| Pri motion ra |
-027 |
|
Sec motion ra |
-027 |
|
| Pri motion dec |
+070 |
|
Sec motion dec |
+070 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 155090 |
|
Constellation |
Draco |
|
SAO |
17341 |
|
HIP |
83477 |
|
| Tycho2 |
4420-01019-1 |
|
HD |
155090 |
|
ADS |
10340 |
|
BD |
BD+69 891 |
|
| Distance |
88.03 |
|
Distance ly |
287.15 |
|
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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