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 |
|
Discov num |
BU 1367 |
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Comp |
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Coord arcsec 2000 |
01 55 33.97 +01 45 56.9 |
|
| Date first |
1904 |
|
Date last |
2016 |
|
Obs |
25 |
|
| Pa first |
30 |
|
Pa last |
96.5 |
|
P.A. Now (θ) |
96.5° |
|
| Sep first |
0.9 |
|
Sep last |
0.752 |
|
Sep. Now (ρ) |
0.752" |
|
| Mag pri |
10.44 |
|
Mag sec |
10.71 |
|
delta mag (ΔM) |
0.27 |
|
Spectral class |
K2 (yellow-orange) |
|
| Pri motion ra |
-002 |
|
Sec motion ra |
-002 |
|
| Pri motion dec |
-017 |
|
Sec motion dec |
-017 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cetus |
|
Tycho2 |
0030-00736-1 |
|
Gaia DR2 |
2511412483441853824 |
|
ADS |
1533 |
|
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 |
| 2031 |
117.9 |
0.767 |
| 2032 |
118.6 |
0.771 |
| 2033 |
119.3 |
0.775 |
| 2034 |
120.0 |
0.780 |
| 2035 |
120.7 |
0.784 |
| 2036 |
121.4 |
0.789 |
| 2037 |
122.1 |
0.794 |
| 2038 |
122.8 |
0.799 |
| 2039 |
123.4 |
0.803 |
| 2040 |
124.1 |
0.808 |
| 2041 |
124.7 |
0.814 |
| 2042 |
125.4 |
0.819 |
| 2043 |
126.0 |
0.824 |
| 2044 |
126.6 |
0.829 |
| 2045 |
127.3 |
0.835 |
| 2046 |
127.9 |
0.840 |
| 2047 |
128.5 |
0.846 |
| 2048 |
129.1 |
0.852 |
| 2049 |
129.7 |
0.857 |
| 2050 |
130.2 |
0.863 |
|
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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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