04180-3826 HDS 546 (HD 27426)
04h 17m 58.36s -38° 25' 44.0" P.A. 228.00 sep 0.1 mag 9.39,10.37 Sp K2V dist. 37.33 pc (121.77 l.y.)
| Coord 2000 |
04180-3826 |
|
Discov num |
HDS 546 |
|
Comp |
|
|
Coord arcsec 2000 |
04 17 58.36 -38 25 44.0 |
|
| Date first |
1991 |
|
Date last |
2021 |
|
Obs |
18 |
|
| Pa first |
230 |
|
Pa last |
227.7 |
|
P.A. Now (θ) |
185.7° |
|
| Sep first |
0.1 |
|
Sep last |
0.13 |
|
Sep. Now (ρ) |
0.068" |
|
| Mag pri |
9.39 |
|
Mag sec |
10.37 |
|
delta mag (ΔM) |
0.98 |
|
Spectral class |
K2V (yellow-orange) |
|
| Pri motion ra |
-101 |
|
Sec motion ra |
|
|
| Pri motion dec |
-065 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 27426 |
|
Constellation |
Eridanus |
|
SAO |
194906 |
|
HIP |
20048 |
|
| Tycho2 |
7578-00223-1 |
|
Gaia DR2 |
4868409171627123456 |
|
HD |
27426 |
|
CD |
CD-38 1515 |
|
| CP |
CP-38 410 |
|
Distance |
37.33 |
|
Distance ly |
121.77 |
|
ORBITAL ELEMENTS
| Period (P) | 7.566y | |
Periastron (T) | 2017.921y | |
Semi-major axis (a) | 0.122a | |
| Eccentricity (e) | 0.271 | |
Inclination (i) | 114.6° | |
Longitude of periastron (ω) | 36.9° | |
| Node (Ω) | 64.1° | |
Notes | | |
Reference | Tok2018b | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
201.1 |
0.083 |
| 2001 |
128.2 |
0.058 |
| 2002 |
75.4 |
0.092 |
| 2003 |
33.4 |
0.060 |
| 2004 |
274.9 |
0.075 |
| 2005 |
248.9 |
0.136 |
| 2006 |
235.2 |
0.145 |
| 2007 |
218.4 |
0.112 |
| 2008 |
176.9 |
0.063 |
| 2009 |
98.5 |
0.073 |
| 2010 |
61.2 |
0.091 |
| 2011 |
335.9 |
0.040 |
| 2012 |
259.7 |
0.107 |
| 2013 |
242.7 |
0.146 |
| 2014 |
229.0 |
0.135 |
| 2015 |
206.2 |
0.089 |
| 2016 |
139.8 |
0.056 |
| 2017 |
79.9 |
0.089 |
| 2018 |
42.4 |
0.069 |
| 2019 |
282.7 |
0.064 |
| 2020 |
251.0 |
0.131 |
| 2021 |
237.0 |
0.146 |
| 2022 |
221.3 |
0.118 |
| 2023 |
185.7 |
0.068 |
| 2024 |
106.1 |
0.068 |
| 2025 |
65.6 |
0.094 |
| 2026 |
358.3 |
0.042 |
| 2027 |
263.2 |
0.098 |
| 2028 |
244.5 |
0.144 |
| 2029 |
231.0 |
0.138 |
| 2030 |
210.5 |
0.096 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
