02057-2423 I 454 AB (HD 12889)
02h 05m 41.51s -24° 22' 33.8" P.A. 170.00 sep 0.5 mag 8.62,11.32 Sp G9+G9+K5V dist. 46.64 pc (152.14 l.y.)
| Coord 2000 |
02057-2423 |
|
Discov num |
I 454 |
|
Comp |
AB |
|
Coord arcsec 2000 |
02 05 41.51 -24 22 33.8 |
|
| Date first |
1909 |
|
Date last |
2022 |
|
Obs |
46 |
|
| Pa first |
140 |
|
Pa last |
169.7 |
|
P.A. Now (θ) |
169.7° |
|
| Sep first |
1.2 |
|
Sep last |
0.468 |
|
Sep. Now (ρ) |
0.468" |
|
| Mag pri |
8.62 |
|
Mag sec |
11.32 |
|
delta mag (ΔM) |
2.7 |
|
Spectral class |
G9+G9+K5V (yellow/yellow) |
|
| Pri motion ra |
+419 |
|
Sec motion ra |
+420 |
|
| Pri motion dec |
-064 |
|
Sec motion dec |
-057 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.017 (< 0.3, Physical double)
This double is physical.
02057-2423 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
02 05 42 -24 22 34 |
WSI 71 Aa,Ab |
2022 |
24 |
283 |
0.0 |
9.27 |
9.50 |
0.23 |
Y |
|
| Show |
HD 12889 |
167545 |
02 05 42 -24 22 34 |
I 454 AB |
2022 |
46 |
170 |
0.5 |
8.62 |
11.32 |
2.70 |
Y |
<=== |
| Show |
|
167545 |
02 05 42 -24 22 34 |
I 454 AB,C |
2015 |
19 |
257 |
56.6 |
8.62 |
8.96 |
0.34 |
|
|
Quintuple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 12889 |
|
Constellation |
Fornax |
|
SAO |
167545 |
|
HIP |
9774 |
|
| Tycho2 |
6430-00057-1 |
|
HD |
12889 |
|
ADS |
1652 |
|
CD |
CD-24 889 |
|
| CP |
CP-24 236 |
|
Distance |
46.64 |
|
Distance ly |
152.14 |
|
ORBITAL ELEMENTS
| Period (P) | 213y | ± 213 |
Periastron (T) | 2057y | ± 43 |
Semi-major axis (a) | 1.03a | ± 0.66 |
| Eccentricity (e) | 0.45 | ± 0.84 |
Inclination (i) | 76° | ± 11 |
Longitude of periastron (ω) | 175° | ± 85 |
| Node (Ω) | 140° | ± 8 |
Notes | n | |
Reference | Tok2014b | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
149.6 |
1.043 |
| 2001 |
150.0 |
1.022 |
| 2002 |
150.3 |
1.002 |
| 2003 |
150.7 |
0.980 |
| 2004 |
151.1 |
0.959 |
| 2005 |
151.6 |
0.937 |
| 2006 |
152.0 |
0.914 |
| 2007 |
152.5 |
0.891 |
| 2008 |
153.0 |
0.868 |
| 2009 |
153.5 |
0.844 |
| 2010 |
154.1 |
0.819 |
| 2011 |
154.7 |
0.795 |
| 2012 |
155.3 |
0.769 |
| 2013 |
156.0 |
0.744 |
| 2014 |
156.7 |
0.718 |
| 2015 |
157.5 |
0.691 |
| 2016 |
158.3 |
0.664 |
| 2017 |
159.3 |
0.637 |
| 2018 |
160.3 |
0.610 |
| 2019 |
161.4 |
0.582 |
| 2020 |
162.6 |
0.554 |
| 2021 |
163.9 |
0.526 |
| 2022 |
165.4 |
0.497 |
| 2023 |
167.0 |
0.468 |
| 2024 |
168.9 |
0.440 |
| 2025 |
171.1 |
0.411 |
| 2026 |
173.5 |
0.383 |
| 2027 |
176.4 |
0.355 |
| 2028 |
179.7 |
0.327 |
| 2029 |
183.6 |
0.301 |
| 2030 |
188.3 |
0.276 |
| 2031 |
193.9 |
0.252 |
| 2032 |
200.6 |
0.231 |
| 2033 |
208.4 |
0.214 |
| 2034 |
217.5 |
0.200 |
| 2035 |
227.6 |
0.192 |
| 2036 |
238.3 |
0.190 |
| 2037 |
248.8 |
0.194 |
| 2038 |
258.6 |
0.204 |
| 2039 |
267.3 |
0.219 |
| 2040 |
274.7 |
0.238 |
| 2041 |
281.0 |
0.259 |
| 2042 |
286.3 |
0.283 |
| 2043 |
290.7 |
0.307 |
| 2044 |
294.5 |
0.333 |
| 2045 |
297.8 |
0.358 |
| 2046 |
300.6 |
0.383 |
| 2047 |
303.1 |
0.408 |
| 2048 |
305.3 |
0.432 |
| 2049 |
307.2 |
0.454 |
| 2050 |
309.0 |
0.475 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
