11107+3110 HJ 2562
11h 10m 41.86s +31° 09' 32.7" P.A. 221.00 sep 1.0 mag 10.53,11.40 Sp K5 dist. 54.85 pc (178.92 l.y.)
Coord 2000 |
11107+3110 |
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Discov num |
HJ 2562 |
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Comp |
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Coord arcsec 2000 |
11 10 41.86 +31 09 32.7 |
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Date first |
1831 |
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Date last |
2017 |
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Obs |
50 |
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Pa first |
347 |
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Pa last |
221 |
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P.A. Now (θ) |
221° |
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Sep first |
1.5 |
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Sep last |
1.009 |
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Sep. Now (ρ) |
1.009" |
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Mag pri |
10.53 |
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Mag sec |
11.40 |
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delta mag (ΔM) |
0.87 |
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Spectral class |
K5 (yellow-orange) |
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Pri motion ra |
-088 |
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Sec motion ra |
-088 |
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Pri motion dec |
-023 |
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Sec motion dec |
-023 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Ursa Major |
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HIP |
54619 |
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Tycho2 |
2520-00597-1 |
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Gaia DR2 |
756958509559756544 |
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ADS |
8082 |
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BD |
BD+31 2238 |
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Distance |
54.85 |
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Distance ly |
178.92 |
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ORBITAL ELEMENTS
Period (P) | 468.8926y | ± 249.5266 |
Periastron (T) | 1857.7161y | ± 26.5467 |
Semi-major axis (a) | 1.76611a | ± 0.57719 |
Eccentricity (e) | 0.32888 | ± 0.32191 |
Inclination (i) | 119.779° | ± 11.231 |
Longitude of periastron (ω) | 123.1° | ± 41.075 |
Node (Ω) | 138.446° | ± 16.345 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 1996 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
243.7 |
1.070 |
2001 |
242.7 |
1.069 |
2002 |
241.7 |
1.068 |
2003 |
240.8 |
1.068 |
2004 |
239.8 |
1.068 |
2005 |
238.8 |
1.068 |
2006 |
237.8 |
1.068 |
2007 |
236.8 |
1.068 |
2008 |
235.8 |
1.069 |
2009 |
234.9 |
1.069 |
2010 |
233.9 |
1.070 |
2011 |
232.9 |
1.072 |
2012 |
231.9 |
1.073 |
2013 |
230.9 |
1.075 |
2014 |
230.0 |
1.076 |
2015 |
229.0 |
1.078 |
2016 |
228.0 |
1.081 |
2017 |
227.1 |
1.083 |
2018 |
226.1 |
1.086 |
2019 |
225.2 |
1.089 |
2020 |
224.2 |
1.092 |
2021 |
223.3 |
1.095 |
2022 |
222.4 |
1.098 |
2023 |
221.4 |
1.102 |
2024 |
220.5 |
1.106 |
2025 |
219.6 |
1.109 |
2026 |
218.7 |
1.114 |
2027 |
217.8 |
1.118 |
2028 |
216.9 |
1.122 |
2029 |
216.0 |
1.127 |
2030 |
215.1 |
1.132 |
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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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