01084-5515 RST 1205 AB (Wurren)
01h 08m 23.08s -55° 14' 44.7" P.A. 128.00 sep 0.6 mag 4.02,6.80 Sp B6V+B9V dist. 91.58 pc (298.73 l.y.)
| Coord 2000 |
01084-5515 |
|
Discov num |
RST1205 |
|
Comp |
AB |
|
Coord arcsec 2000 |
01 08 23.08 -55 14 44.7 |
|
| Date first |
1931 |
|
Date last |
2021 |
|
Obs |
38 |
|
| Pa first |
22 |
|
Pa last |
127.9 |
|
P.A. Now (θ) |
127.9° |
|
| Sep first |
0.6 |
|
Sep last |
0.586 |
|
Sep. Now (ρ) |
0.586" |
|
| Mag pri |
4.02 |
|
Mag sec |
6.80 |
|
delta mag (ΔM) |
2.78 |
|
Spectral class |
B6V+B9V (blue-white/blue-white) |
|
| Pri motion ra |
+010 |
|
Sec motion ra |
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|
| Pri motion dec |
+016 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
01084-5515 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
Wurren |
232306 |
01 08 23 -55 14 45 |
RST 1205 AB |
2021 |
38 |
128 |
0.6 |
4.02 |
6.80 |
2.78 |
Y |
<=== |
| Show |
Zet Phe |
232306 |
01 08 23 -55 14 45 |
RMK 2 AB,C |
2016 |
42 |
239 |
6.8 |
4.00 |
8.23 |
4.23 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Common name |
Wurren |
|
Constellation |
Phoenix |
|
SAO |
232306 |
|
HIP |
5348 |
|
| Tycho2 |
8476-01302-1 |
|
Gaia DR2 |
4913847589156808960 |
|
HD |
6882 |
|
HR |
338 |
|
| GC |
1387 |
|
CD |
CD-55 267 |
|
CP |
CP-55 241 |
|
Bayer |
Zeta Phoenicis |
|
| Bayer name |
Zet Phe |
|
Distance |
91.58 |
|
Distance ly |
298.73 |
|
Bayer greek |
ζ Phe |
|
ORBITAL ELEMENTS
| Period (P) | 289.6y | |
Periastron (T) | 1920.9y | |
Semi-major axis (a) | 1.194a | |
| Eccentricity (e) | 0.597 | |
Inclination (i) | 71.2° | |
Longitude of periastron (ω) | 292.2° | |
| Node (Ω) | 24.9° | |
Notes | n | |
Reference | Lin2019a | |
| Equinox | 2000 | |
Last observation | 2017 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
95.4 |
0.548 |
| 2001 |
96.9 |
0.547 |
| 2002 |
98.5 |
0.546 |
| 2003 |
100.0 |
0.545 |
| 2004 |
101.5 |
0.545 |
| 2005 |
103.1 |
0.544 |
| 2006 |
104.6 |
0.545 |
| 2007 |
106.2 |
0.545 |
| 2008 |
107.7 |
0.546 |
| 2009 |
109.3 |
0.547 |
| 2010 |
110.8 |
0.548 |
| 2011 |
112.3 |
0.550 |
| 2012 |
113.8 |
0.552 |
| 2013 |
115.3 |
0.554 |
| 2014 |
116.8 |
0.557 |
| 2015 |
118.3 |
0.560 |
| 2016 |
119.7 |
0.563 |
| 2017 |
121.2 |
0.566 |
| 2018 |
122.6 |
0.570 |
| 2019 |
124.0 |
0.574 |
| 2020 |
125.4 |
0.578 |
| 2021 |
126.7 |
0.583 |
| 2022 |
128.1 |
0.587 |
| 2023 |
129.4 |
0.592 |
| 2024 |
130.7 |
0.597 |
| 2025 |
131.9 |
0.603 |
| 2026 |
133.2 |
0.608 |
| 2027 |
134.4 |
0.614 |
| 2028 |
135.6 |
0.620 |
| 2029 |
136.8 |
0.626 |
| 2030 |
138.0 |
0.632 |
| 2031 |
139.1 |
0.639 |
| 2032 |
140.2 |
0.645 |
| 2033 |
141.3 |
0.652 |
| 2034 |
142.4 |
0.659 |
| 2035 |
143.4 |
0.666 |
| 2036 |
144.4 |
0.673 |
| 2037 |
145.4 |
0.681 |
| 2038 |
146.4 |
0.688 |
| 2039 |
147.4 |
0.696 |
| 2040 |
148.3 |
0.703 |
| 2041 |
149.2 |
0.711 |
| 2042 |
150.1 |
0.719 |
| 2043 |
151.0 |
0.727 |
| 2044 |
151.8 |
0.735 |
| 2045 |
152.7 |
0.743 |
| 2046 |
153.5 |
0.751 |
| 2047 |
154.3 |
0.759 |
| 2048 |
155.1 |
0.768 |
| 2049 |
155.9 |
0.776 |
| 2050 |
156.6 |
0.784 |
|
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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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