01243-0655 BU 1163 (HD 8556)
01h 24m 20.48s -06° 54' 52.8" P.A. 235.00 sep 0.1 mag 6.59,6.98 Sp F3V dist. 46.64 pc (152.14 l.y.)
| Coord 2000 |
01243-0655 |
|
Discov num |
BU 1163 |
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Comp |
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Coord arcsec 2000 |
01 24 20.48 -06 54 52.8 |
|
| Date first |
1890 |
|
Date last |
2021 |
|
Obs |
195 |
|
| Pa first |
192 |
|
Pa last |
234.9 |
|
P.A. Now (θ) |
224.5° |
|
| Sep first |
0.2 |
|
Sep last |
0.086 |
|
Sep. Now (ρ) |
0.194" |
|
| Mag pri |
6.59 |
|
Mag sec |
6.98 |
|
delta mag (ΔM) |
0.39 |
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Spectral class |
F3V (yellow-white) |
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| Pri motion ra |
+031 |
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Sec motion ra |
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| Pri motion dec |
+003 |
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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 8556 |
|
Constellation |
Cetus |
|
SAO |
129277 |
|
HIP |
6564 |
|
| Tycho2 |
4684-02325-1 |
|
Gaia DR2 |
2478536467295616000 |
|
HD |
8556 |
|
HR |
404 |
|
| GC |
1697 |
|
ADS |
1123 |
|
BD |
BD-07 223 |
|
Distance |
46.64 |
|
| Distance ly |
152.14 |
|
ORBITAL ELEMENTS
| Period (P) | 16.11y | |
Periastron (T) | 1988.84y | |
Semi-major axis (a) | 0.199a | |
| Eccentricity (e) | 0.93 | |
Inclination (i) | 117° | |
Longitude of periastron (ω) | 348° | |
| Node (Ω) | 29° | |
Notes | n | |
Reference | Sod1999 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
211.1 |
0.346 |
| 2001 |
209.8 |
0.316 |
| 2002 |
208.1 |
0.275 |
| 2003 |
205.7 |
0.219 |
| 2004 |
200.9 |
0.136 |
| 2005 |
357.1 |
0.014 |
| 2006 |
229.8 |
0.124 |
| 2007 |
224.0 |
0.202 |
| 2008 |
221.3 |
0.259 |
| 2009 |
219.4 |
0.302 |
| 2010 |
217.9 |
0.334 |
| 2011 |
216.7 |
0.357 |
| 2012 |
215.6 |
0.371 |
| 2013 |
214.5 |
0.377 |
| 2014 |
213.5 |
0.376 |
| 2015 |
212.4 |
0.366 |
| 2016 |
211.3 |
0.348 |
| 2017 |
209.9 |
0.320 |
| 2018 |
208.3 |
0.281 |
| 2019 |
206.0 |
0.226 |
| 2020 |
201.7 |
0.147 |
| 2021 |
109.7 |
0.010 |
| 2022 |
231.0 |
0.113 |
| 2023 |
224.5 |
0.194 |
| 2024 |
221.5 |
0.253 |
| 2025 |
219.6 |
0.298 |
| 2026 |
218.1 |
0.331 |
| 2027 |
216.8 |
0.355 |
| 2028 |
215.7 |
0.370 |
| 2029 |
214.6 |
0.377 |
| 2030 |
213.6 |
0.376 |
| 2031 |
212.5 |
0.368 |
| 2032 |
211.4 |
0.351 |
| 2033 |
210.1 |
0.324 |
| 2034 |
208.5 |
0.286 |
| 2035 |
206.3 |
0.233 |
| 2036 |
202.4 |
0.158 |
| 2037 |
176.1 |
0.029 |
| 2038 |
232.4 |
0.102 |
| 2039 |
224.9 |
0.187 |
| 2040 |
221.8 |
0.248 |
| 2041 |
219.7 |
0.293 |
| 2042 |
218.2 |
0.328 |
| 2043 |
216.9 |
0.352 |
| 2044 |
215.8 |
0.369 |
| 2045 |
214.7 |
0.377 |
| 2046 |
213.7 |
0.377 |
| 2047 |
212.7 |
0.369 |
| 2048 |
211.5 |
0.353 |
| 2049 |
210.3 |
0.327 |
| 2050 |
208.7 |
0.290 |
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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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