11053-2718 FIN 47 AB
11h 05m 20.03s -27° 17' 36.9" P.A. 231.00 sep 0.1 mag 5.70,5.70 Sp F3IV dist. 43.23 pc (141.02 l.y.)
| Coord 2000 |
11053-2718 |
|
Discov num |
FIN 47 |
|
Comp |
AB |
|
Coord arcsec 2000 |
11 05 20.03 -27 17 36.9 |
|
| Date first |
1927 |
|
Date last |
2021 |
|
Obs |
75 |
|
| Pa first |
46 |
|
Pa last |
230.7 |
|
P.A. Now (θ) |
100.3° |
|
| Sep first |
0.2 |
|
Sep last |
0.057 |
|
Sep. Now (ρ) |
0.013" |
|
| Mag pri |
5.70 |
|
Mag sec |
5.70 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
F3IV (yellow-white) |
|
| Pri motion ra |
-188 |
|
Sec motion ra |
|
|
| Pri motion dec |
-004 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
11053-2718 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
179514 |
11 05 20 -27 17 37 |
FIN 47 AB |
2021 |
75 |
231 |
0.1 |
5.70 |
5.70 |
0.00 |
Y |
<=== |
| Show |
Chi1 Hya |
179514 |
11 05 20 -27 17 37 |
LDS 6238 AC |
1960 |
1 |
46 |
18.0 |
4.96 |
6.10 |
1.14 |
|
|
| Show |
|
179514 |
11 05 20 -27 17 37 |
TOB 374 AD |
2015 |
9 |
88 |
507.3 |
4.96 |
5.70 |
0.74 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Hydra |
|
SAO |
179514 |
|
HIP |
54204 |
|
Tycho2 |
6644-01331-1 |
|
| Gaia DR2 |
3532314252513733888 |
|
HD |
96202 |
|
HR |
4314 |
|
GC |
15248 |
|
| GL |
NN 3642A |
|
CD |
CD-26 8338 |
|
CP |
CP-26 4439 |
|
Bayer |
Chi 1 Hydrae |
|
| Bayer name |
Chi1 Hya |
|
FK5 |
419 |
|
Distance |
43.23 |
|
Distance ly |
141.02 |
|
| Bayer greek |
χ1 Hya |
|
ORBITAL ELEMENTS
| Period (P) | 7.6093y | ± 0.0022 |
Periastron (T) | 2021.477y | ± 0.038 |
Semi-major axis (a) | 0.136a | ± 0.001 |
| Eccentricity (e) | 0.345 | ± 0.006 |
Inclination (i) | 94.6° | ± 0.3 |
Longitude of periastron (ω) | 341.3° | ± 1.8 |
| Node (Ω) | 224.9° | ± 0.2 |
Notes | n | |
Reference | Msn2021b | |
| Equinox | | |
Last observation | 2021 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
180.5 |
0.015 |
| 2001 |
52.0 |
0.090 |
| 2002 |
47.5 |
0.157 |
| 2003 |
45.3 |
0.180 |
| 2004 |
43.0 |
0.150 |
| 2005 |
36.4 |
0.061 |
| 2006 |
229.5 |
0.065 |
| 2007 |
219.6 |
0.070 |
| 2008 |
65.3 |
0.033 |
| 2009 |
49.6 |
0.121 |
| 2010 |
46.6 |
0.172 |
| 2011 |
44.5 |
0.174 |
| 2012 |
41.6 |
0.122 |
| 2013 |
4.4 |
0.014 |
| 2014 |
225.3 |
0.089 |
| 2015 |
209.2 |
0.035 |
| 2016 |
54.2 |
0.070 |
| 2017 |
48.2 |
0.146 |
| 2018 |
45.8 |
0.179 |
| 2019 |
43.6 |
0.161 |
| 2020 |
39.2 |
0.085 |
| 2021 |
234.8 |
0.041 |
| 2022 |
222.0 |
0.084 |
| 2023 |
100.3 |
0.013 |
| 2024 |
50.8 |
0.104 |
| 2025 |
47.1 |
0.164 |
| 2026 |
45.0 |
0.178 |
| 2027 |
42.4 |
0.139 |
| 2028 |
31.7 |
0.040 |
| 2029 |
227.3 |
0.079 |
| 2030 |
216.7 |
0.055 |
|
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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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