02128-0224 TOK 39 Aa,Ab
02h 12m 47.54s -02° 23' 37.1" P.A. 187.00 sep 0.0 mag 6.18,6.69 Sp F8V dist. 39.7 pc (129.5 l.y.)
| Coord 2000 |
02128-0224 |
|
Discov num |
TOK 39 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
02 12 47.54 -02 23 37.1 |
|
| Date first |
2007 |
|
Date last |
2020 |
|
Obs |
22 |
|
| Pa first |
115 |
|
Pa last |
187 |
|
P.A. Now (θ) |
187° |
|
| Sep first |
0.0 |
|
Sep last |
0.012 |
|
Sep. Now (ρ) |
0.012" |
|
| Mag pri |
6.18 |
|
Mag sec |
6.69 |
|
delta mag (ΔM) |
0.51 |
|
Spectral class |
F8V (yellow-white) |
|
| Pri motion ra |
+374 |
|
Sec motion ra |
|
|
| Pri motion dec |
-069 |
|
Sec motion dec |
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|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
02128-0224 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
129752 |
02 12 48 -02 23 37 |
TOK 39 Aa,Ab |
2020 |
22 |
187 |
0.0 |
6.18 |
6.69 |
0.51 |
Y |
<=== |
| Show |
66 Cet |
129752 |
02 12 48 -02 23 37 |
STF 231 AB |
2019 |
171 |
235 |
16.8 |
5.72 |
7.71 |
1.99 |
|
|
| Show |
|
129752 |
02 12 48 -02 23 37 |
STF 231 AC |
1998 |
4 |
53 |
147.0 |
5.65 |
11.50 |
5.85 |
|
|
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cetus |
|
SAO |
129752 |
|
HIP |
10305 |
|
Tycho2 |
4690-01110-1 |
|
| HD |
13612 |
|
HR |
650 |
|
GC |
2652 |
|
ADS |
1703 |
|
| GL |
Gl 87.1A |
|
BD |
BD-03 336 |
|
Flamsteed |
66 Ceti |
|
Flamsteed name |
66 Cet |
|
| Distance |
39.7 |
|
Distance ly |
129.5 |
|
ORBITAL ELEMENTS
| Period (P) | 0.2595y | |
Periastron (T) | 1989.5599y | |
Semi-major axis (a) | 0.0144a | |
| Eccentricity (e) | 0.689 | |
Inclination (i) | 30° | |
Longitude of periastron (ω) | 74.3° | |
| Node (Ω) | 241° | |
Notes | n | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | 2019 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
102.4 |
0.018 |
| 2001 |
68.3 |
0.010 |
| 2002 |
218.6 |
0.008 |
| 2003 |
170.3 |
0.016 |
| 2004 |
148.9 |
0.020 |
| 2005 |
133.0 |
0.021 |
| 2006 |
117.6 |
0.021 |
| 2007 |
98.5 |
0.017 |
| 2008 |
55.1 |
0.008 |
| 2009 |
204.7 |
0.010 |
| 2010 |
165.9 |
0.017 |
| 2011 |
146.0 |
0.020 |
| 2012 |
130.4 |
0.021 |
| 2013 |
114.8 |
0.020 |
| 2014 |
94.2 |
0.016 |
| 2015 |
32.5 |
0.006 |
| 2016 |
194.5 |
0.012 |
| 2017 |
161.9 |
0.017 |
| 2018 |
143.2 |
0.021 |
| 2019 |
127.8 |
0.021 |
| 2020 |
111.8 |
0.020 |
| 2021 |
89.2 |
0.015 |
| 2022 |
343.1 |
0.004 |
| 2023 |
186.6 |
0.013 |
| 2024 |
158.2 |
0.018 |
| 2025 |
140.4 |
0.021 |
| 2026 |
125.2 |
0.021 |
| 2027 |
108.7 |
0.019 |
| 2028 |
83.4 |
0.014 |
| 2029 |
273.4 |
0.005 |
| 2030 |
180.0 |
0.014 |
|
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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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