01556+0146 BU 1367
01h 55m 33.97s +01° 45' 56.9" P.A. 97.00 sep 0.8 mag 10.44,10.71 Sp K2
Coord 2000 |
01556+0146 |
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Discov num |
BU 1367 |
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Comp |
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Coord arcsec 2000 |
01 55 33.97 +01 45 56.9 |
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Date first |
1904 |
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Date last |
2016 |
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Obs |
25 |
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Pa first |
30 |
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Pa last |
96.5 |
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P.A. Now (θ) |
96.5° |
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Sep first |
0.9 |
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Sep last |
0.752 |
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Sep. Now (ρ) |
0.752" |
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Mag pri |
10.44 |
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Mag sec |
10.71 |
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delta mag (ΔM) |
0.27 |
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Spectral class |
K2 (yellow-orange) |
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Pri motion ra |
-002 |
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Sec motion ra |
-002 |
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Pri motion dec |
-017 |
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Sec motion dec |
-017 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cetus |
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Tycho2 |
0030-00736-1 |
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Gaia DR2 |
2511412483441853824 |
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ADS |
1533 |
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ORBITAL ELEMENTS
Period (P) | 882.5951y | ± 507.1726 |
Periastron (T) | 1884.0678y | ± 31.8613 |
Semi-major axis (a) | 3.7532a | ± 2.38687 |
Eccentricity (e) | 0.88304 | ± 0.12481 |
Inclination (i) | 80.859° | ± 10.007 |
Longitude of periastron (ω) | 291.812° | ± 27.663 |
Node (Ω) | 19.732° | ± 10.395 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2001 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
92.2 |
0.696 |
2001 |
93.1 |
0.696 |
2002 |
94.0 |
0.697 |
2003 |
94.9 |
0.697 |
2004 |
95.8 |
0.698 |
2005 |
96.7 |
0.699 |
2006 |
97.5 |
0.700 |
2007 |
98.4 |
0.701 |
2008 |
99.3 |
0.702 |
2009 |
100.1 |
0.703 |
2010 |
101.0 |
0.705 |
2011 |
101.9 |
0.707 |
2012 |
102.7 |
0.708 |
2013 |
103.6 |
0.710 |
2014 |
104.4 |
0.712 |
2015 |
105.3 |
0.715 |
2016 |
106.1 |
0.717 |
2017 |
106.9 |
0.719 |
2018 |
107.8 |
0.722 |
2019 |
108.6 |
0.725 |
2020 |
109.4 |
0.728 |
2021 |
110.2 |
0.731 |
2022 |
111.0 |
0.734 |
2023 |
111.8 |
0.737 |
2024 |
112.6 |
0.740 |
2025 |
113.3 |
0.744 |
2026 |
114.1 |
0.747 |
2027 |
114.9 |
0.751 |
2028 |
115.6 |
0.755 |
2029 |
116.4 |
0.759 |
2030 |
117.1 |
0.763 |
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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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