01337-1213 HWE 4 AB (HD 9575)
01h 33m 42.39s -12° 12' 46.1" P.A. 335.00 sep 0.9 mag 9.23,9.31 Sp G3V dist. 66.62 pc (217.31 l.y.)
Coord 2000 |
01337-1213 |
|
Discov num |
HWE 4 |
|
Comp |
AB |
|
Coord arcsec 2000 |
01 33 42.39 -12 12 46.1 |
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Date first |
1877 |
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Date last |
2016 |
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Obs |
59 |
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Pa first |
328 |
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Pa last |
335 |
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P.A. Now (θ) |
335° |
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Sep first |
0.9 |
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Sep last |
0.9 |
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Sep. Now (ρ) |
0.9" |
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Mag pri |
9.23 |
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Mag sec |
9.31 |
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delta mag (ΔM) |
0.08 |
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Spectral class |
G3V (yellow) |
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Pri motion ra |
-011 |
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Sec motion ra |
-011 |
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Pri motion dec |
-009 |
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Sec motion dec |
-009 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
01337-1213 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 9575 |
147882 |
01 33 42 -12 12 46 |
HWE 4 AB |
2016 |
59 |
335 |
0.9 |
9.23 |
9.31 |
0.08 |
Y |
<=== |
Show |
|
147882 |
01 33 42 -12 12 46 |
HWE 4 AC |
2016 |
4 |
257 |
61.5 |
9.23 |
12.25 |
3.02 |
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Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 9575 |
|
Constellation |
Cetus |
|
SAO |
147882 |
|
HIP |
7274 |
|
Tycho2 |
5279-00225-1 |
|
HD |
9575 |
|
ADS |
1223 |
|
BD |
BD-12 286 |
|
Distance |
66.62 |
|
Distance ly |
217.31 |
|
SUSPECTED ORBITAL ELEMENTS
Identifier | 01337-1213 HWE 4 |
coord_arcsec_2000 | 013342.39-121246.1 |
Period (P) | 142.42y | |
Periastron (T) | 2065.92y | |
Semi-major axis (a) | 0.571a | |
Eccentricity (e) | 0.837 | |
Inclination (i) | 118.6° | |
Longitude of periastron (ω) | 318.6° | |
Node (Ω) | 133.7° | |
Notes | n | |
Reference | Doc2017i | |
Equinox | 2000 | |
Last observation | 2014 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
335.0 |
0.869 |
2001 |
334.8 |
0.871 |
2002 |
334.5 |
0.873 |
2003 |
334.2 |
0.875 |
2004 |
333.9 |
0.876 |
2005 |
333.6 |
0.877 |
2006 |
333.3 |
0.878 |
2007 |
333.1 |
0.878 |
2008 |
332.8 |
0.878 |
2009 |
332.5 |
0.878 |
2010 |
332.2 |
0.878 |
2011 |
332.0 |
0.878 |
2012 |
331.7 |
0.877 |
2013 |
331.4 |
0.875 |
2014 |
331.1 |
0.874 |
2015 |
330.8 |
0.872 |
2016 |
330.5 |
0.870 |
2017 |
330.3 |
0.868 |
2018 |
330.0 |
0.865 |
2019 |
329.7 |
0.862 |
2020 |
329.4 |
0.859 |
2021 |
329.1 |
0.855 |
2022 |
328.8 |
0.851 |
2023 |
328.5 |
0.847 |
2024 |
328.2 |
0.842 |
2025 |
327.9 |
0.837 |
2026 |
327.6 |
0.831 |
2027 |
327.3 |
0.826 |
2028 |
326.9 |
0.819 |
2029 |
326.6 |
0.813 |
2030 |
326.3 |
0.806 |
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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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