01158+0947 A 2102 (HD 7564)
01h 15m 46.78s +09° 47' 05.3" P.A. 96.00 sep 0.2 mag 7.36,9.89 Sp F4V dist. 57.41 pc (187.27 l.y.)
| Coord 2000 |
01158+0947 |
|
Discov num |
A 2102 |
|
Comp |
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Coord arcsec 2000 |
01 15 46.78 +09 47 05.3 |
|
| Date first |
1909 |
|
Date last |
2016 |
|
Obs |
33 |
|
| Pa first |
149 |
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Pa last |
96.2 |
|
P.A. Now (θ) |
96.2° |
|
| Sep first |
0.5 |
|
Sep last |
0.235 |
|
Sep. Now (ρ) |
0.235" |
|
| Mag pri |
7.36 |
|
Mag sec |
9.89 |
|
delta mag (ΔM) |
2.53 |
|
Spectral class |
F4V (yellow-white) |
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| Pri motion ra |
-083 |
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Sec motion ra |
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| Pri motion dec |
+043 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 7564 |
|
Constellation |
Pisces |
|
SAO |
109766 |
|
HIP |
5898 |
|
| Tycho2 |
0613-00226-1 |
|
Gaia DR2 |
2579689922143890304 |
|
HD |
7564 |
|
GC |
1516 |
|
| ADS |
1016 |
|
BD |
BD+09 142 |
|
Distance |
57.41 |
|
Distance ly |
187.27 |
|
ORBITAL ELEMENTS
| Period (P) | 162y | ± 13 |
Periastron (T) | 2101y | ± 13 |
Semi-major axis (a) | 0.607a | ± 0.035 |
| Eccentricity (e) | 0.447 | ± 0.054 |
Inclination (i) | 101.7° | ± 1 |
Longitude of periastron (ω) | 262.8° | ± 6.6 |
| Node (Ω) | 151.2° | ± 2.1 |
Notes | n | |
Reference | RAO2015 | |
| Equinox | 2000 | |
Last observation | 2012 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
129.3 |
0.407 |
| 2001 |
128.4 |
0.397 |
| 2002 |
127.4 |
0.387 |
| 2003 |
126.4 |
0.376 |
| 2004 |
125.3 |
0.366 |
| 2005 |
124.2 |
0.355 |
| 2006 |
123.0 |
0.345 |
| 2007 |
121.7 |
0.334 |
| 2008 |
120.3 |
0.323 |
| 2009 |
118.8 |
0.313 |
| 2010 |
117.3 |
0.302 |
| 2011 |
115.6 |
0.292 |
| 2012 |
113.8 |
0.281 |
| 2013 |
111.8 |
0.271 |
| 2014 |
109.7 |
0.261 |
| 2015 |
107.4 |
0.251 |
| 2016 |
105.0 |
0.242 |
| 2017 |
102.4 |
0.233 |
| 2018 |
99.5 |
0.224 |
| 2019 |
96.4 |
0.216 |
| 2020 |
93.1 |
0.208 |
| 2021 |
89.6 |
0.201 |
| 2022 |
85.8 |
0.195 |
| 2023 |
81.8 |
0.189 |
| 2024 |
77.5 |
0.185 |
| 2025 |
73.1 |
0.181 |
| 2026 |
68.5 |
0.179 |
| 2027 |
63.8 |
0.177 |
| 2028 |
59.1 |
0.177 |
| 2029 |
54.3 |
0.178 |
| 2030 |
49.7 |
0.180 |
| 2031 |
45.2 |
0.183 |
| 2032 |
40.8 |
0.186 |
| 2033 |
36.6 |
0.191 |
| 2034 |
32.7 |
0.197 |
| 2035 |
29.0 |
0.204 |
| 2036 |
25.5 |
0.211 |
| 2037 |
22.3 |
0.219 |
| 2038 |
19.3 |
0.227 |
| 2039 |
16.5 |
0.236 |
| 2040 |
13.9 |
0.245 |
| 2041 |
11.6 |
0.254 |
| 2042 |
9.3 |
0.264 |
| 2043 |
7.3 |
0.274 |
| 2044 |
5.4 |
0.284 |
| 2045 |
3.6 |
0.294 |
| 2046 |
2.0 |
0.305 |
| 2047 |
0.4 |
0.315 |
| 2048 |
359.0 |
0.325 |
| 2049 |
357.6 |
0.336 |
| 2050 |
356.3 |
0.346 |
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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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