11017+3641 HDS 1574 Aa,Ab
11h 01m 45.73s +36° 40' 41.6" P.A. 99.00 sep 0.3 mag 7.58,11.06 Sp F0 dist. 74.74 pc (243.8 l.y.)
Coord 2000 |
11017+3641 |
|
Discov num |
HDS1574 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
11 01 45.73 +36 40 41.6 |
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Date first |
1991 |
|
Date last |
2019 |
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Obs |
13 |
|
Pa first |
358 |
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Pa last |
98.8 |
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P.A. Now (θ) |
98.8° |
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Sep first |
0.4 |
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Sep last |
0.28 |
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Sep. Now (ρ) |
0.28" |
|
Mag pri |
7.58 |
|
Mag sec |
11.06 |
|
delta mag (ΔM) |
3.48 |
|
Spectral class |
F0 (yellow-white) |
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Pri motion ra |
-006 |
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Sec motion ra |
|
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Pri motion dec |
+055 |
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Sec motion dec |
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Notes |
O
(Orbital solution) |
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This double is physical.
11017+3641 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
62360 |
11 01 46 +36 40 42 |
HDS 1574 Aa,Ab |
2019 |
13 |
99 |
0.3 |
7.58 |
11.06 |
3.48 |
Y |
<=== |
Show |
HD 95485 |
62360 |
11 01 46 +36 40 42 |
UC 2059 AB |
2015 |
11 |
46 |
46.6 |
7.49 |
10.70 |
3.21 |
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Show |
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11 01 49 +36 41 15 |
COU 1422 Ba,Bb |
2016 |
7 |
47 |
0.7 |
11.20 |
11.50 |
0.30 |
Y |
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Quadruple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Ursa Major |
|
SAO |
62360 |
|
HIP |
53903 |
|
Tycho2 |
2521-01070-1 |
|
Gaia DR2 |
763088080725986304 |
|
HD |
95485 |
|
BD |
BD+37 2145 |
|
Distance |
74.74 |
|
Distance ly |
243.8 |
|
ORBITAL ELEMENTS
Period (P) | 46.22y | ± 2.57 |
Periastron (T) | 2013.14y | ± 0.98 |
Semi-major axis (a) | 0.235a | ± 0.011 |
Eccentricity (e) | 0.795 | ± 0.03 |
Inclination (i) | 116.4° | ± 3.2 |
Longitude of periastron (ω) | 337.5° | ± 14.3 |
Node (Ω) | 169.6° | ± 5.8 |
Notes | | |
Reference | Tok2019e | |
Equinox | 2000 | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
352.5 |
0.365 |
2001 |
351.6 |
0.353 |
2002 |
350.6 |
0.340 |
2003 |
349.6 |
0.325 |
2004 |
348.4 |
0.308 |
2005 |
347.1 |
0.288 |
2006 |
345.6 |
0.266 |
2007 |
343.8 |
0.241 |
2008 |
341.5 |
0.212 |
2009 |
338.5 |
0.179 |
2010 |
333.8 |
0.140 |
2011 |
325.1 |
0.094 |
2012 |
296.7 |
0.043 |
2013 |
188.8 |
0.041 |
2014 |
140.9 |
0.051 |
2015 |
92.9 |
0.051 |
2016 |
58.9 |
0.070 |
2017 |
41.8 |
0.097 |
2018 |
32.3 |
0.126 |
2019 |
26.2 |
0.153 |
2020 |
22.0 |
0.178 |
2021 |
18.8 |
0.203 |
2022 |
16.2 |
0.225 |
2023 |
14.2 |
0.246 |
2024 |
12.4 |
0.265 |
2025 |
10.8 |
0.283 |
2026 |
9.5 |
0.300 |
2027 |
8.2 |
0.315 |
2028 |
7.1 |
0.329 |
2029 |
6.1 |
0.341 |
2030 |
5.1 |
0.353 |
|
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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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