01014+1155 BU 867 (HD 5988)
01h 01m 21.77s +11° 54' 45.9" P.A. 352.00 sep 0.7 mag 8.23,9.34 Sp F5 dist. 70.47 pc (229.87 l.y.)
| Coord 2000 |
01014+1155 |
|
Discov num |
BU 867 |
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Comp |
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Coord arcsec 2000 |
01 01 21.77 +11 54 45.9 |
|
| Date first |
1880 |
|
Date last |
2015 |
|
Obs |
65 |
|
| Pa first |
175 |
|
Pa last |
352.4 |
|
P.A. Now (θ) |
349.3° |
|
| Sep first |
1.0 |
|
Sep last |
0.659 |
|
Sep. Now (ρ) |
0.561" |
|
| Mag pri |
8.23 |
|
Mag sec |
9.34 |
|
delta mag (ΔM) |
1.11 |
|
Spectral class |
F5 (yellow-white) |
|
| Pri motion ra |
+010 |
|
Sec motion ra |
+010 |
|
| Pri motion dec |
+016 |
|
Sec motion dec |
+016 |
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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 5988 |
|
Constellation |
Pisces |
|
SAO |
92207 |
|
HIP |
4775 |
|
| Tycho2 |
0615-00473-1 |
|
Gaia DR2 |
2584078618511132160 |
|
HD |
5988 |
|
GC |
1226 |
|
| ADS |
828 |
|
BD |
BD+11 135 |
|
Distance |
70.47 |
|
Distance ly |
229.87 |
|
ORBITAL ELEMENTS
| Period (P) | 232.04y | ± 18.15 |
Periastron (T) | 2012.72y | ± 9.12 |
Semi-major axis (a) | 0.813a | ± 0.009 |
| Eccentricity (e) | 0.23 | ± 0.01 |
Inclination (i) | 98.9° | ± 1 |
Longitude of periastron (ω) | 2.9° | ± 20.4 |
| Node (Ω) | 354.2° | ± 0.4 |
Notes | n | |
Reference | Hrt2008 | |
| Equinox | 2000 | |
Last observation | 2003 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
359.1 |
0.566 |
| 2001 |
358.6 |
0.576 |
| 2002 |
358.1 |
0.585 |
| 2003 |
357.7 |
0.593 |
| 2004 |
357.3 |
0.601 |
| 2005 |
356.8 |
0.607 |
| 2006 |
356.4 |
0.613 |
| 2007 |
356.0 |
0.617 |
| 2008 |
355.6 |
0.621 |
| 2009 |
355.2 |
0.624 |
| 2010 |
354.8 |
0.625 |
| 2011 |
354.4 |
0.626 |
| 2012 |
354.0 |
0.626 |
| 2013 |
353.6 |
0.625 |
| 2014 |
353.2 |
0.623 |
| 2015 |
352.8 |
0.620 |
| 2016 |
352.4 |
0.616 |
| 2017 |
352.0 |
0.610 |
| 2018 |
351.6 |
0.605 |
| 2019 |
351.2 |
0.598 |
| 2020 |
350.7 |
0.590 |
| 2021 |
350.3 |
0.581 |
| 2022 |
349.8 |
0.572 |
| 2023 |
349.3 |
0.561 |
| 2024 |
348.8 |
0.550 |
| 2025 |
348.3 |
0.538 |
| 2026 |
347.8 |
0.525 |
| 2027 |
347.2 |
0.512 |
| 2028 |
346.6 |
0.498 |
| 2029 |
346.0 |
0.483 |
| 2030 |
345.3 |
0.468 |
|
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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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