11518+5032 HU 730
11h 51m 26.34s +50° 32' 18.8" P.A. 111.00 sep 0.2 mag 10.50,10.50
Coord 2000 |
11518+5032 |
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Discov num |
HU 730 |
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Comp |
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Coord arcsec 2000 |
11 51 26.34 +50 32 18.8 |
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Date first |
1903 |
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Date last |
2019 |
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Obs |
25 |
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Pa first |
228 |
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Pa last |
110.8 |
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P.A. Now (θ) |
110.8° |
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Sep first |
0.2 |
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Sep last |
0.24 |
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Sep. Now (ρ) |
0.24" |
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Mag pri |
10.50 |
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Mag sec |
10.50 |
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delta mag (ΔM) |
0 |
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Spectral class |
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Pri motion ra |
-029 |
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Sec motion ra |
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Pri motion dec |
+007 |
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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
Constellation |
Ursa Major |
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Tycho2 |
3454-00533-1 |
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Gaia DR2 |
791001554219136768 |
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ADS |
8323 |
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ORBITAL ELEMENTS
Period (P) | 249y | |
Periastron (T) | 2085y | |
Semi-major axis (a) | 0.242a | |
Eccentricity (e) | 0.099 | |
Inclination (i) | 130° | |
Longitude of periastron (ω) | 24.1° | |
Node (Ω) | 14° | |
Notes | | |
Reference | USN2002 | |
Equinox | 2000 | |
Last observation | 1995 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
130.4 |
0.175 |
2001 |
128.6 |
0.174 |
2002 |
126.8 |
0.172 |
2003 |
124.9 |
0.171 |
2004 |
123.1 |
0.169 |
2005 |
121.2 |
0.168 |
2006 |
119.2 |
0.166 |
2007 |
117.2 |
0.165 |
2008 |
115.2 |
0.164 |
2009 |
113.2 |
0.163 |
2010 |
111.2 |
0.162 |
2011 |
109.1 |
0.162 |
2012 |
107.0 |
0.161 |
2013 |
105.0 |
0.161 |
2014 |
102.9 |
0.160 |
2015 |
100.7 |
0.160 |
2016 |
98.6 |
0.160 |
2017 |
96.5 |
0.160 |
2018 |
94.4 |
0.160 |
2019 |
92.3 |
0.160 |
2020 |
90.2 |
0.161 |
2021 |
88.1 |
0.161 |
2022 |
86.0 |
0.162 |
2023 |
84.0 |
0.163 |
2024 |
81.9 |
0.164 |
2025 |
79.9 |
0.164 |
2026 |
77.9 |
0.165 |
2027 |
76.0 |
0.167 |
2028 |
74.0 |
0.168 |
2029 |
72.1 |
0.169 |
2030 |
70.2 |
0.170 |
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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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