03076-0358 HDS 396
03h 07m 33.79s -03° 58' 17.0" P.A. 88.00 sep 0.1 mag 11.69,11.71 Sp K8V+M0.5V dist. 54.67 pc (178.33 l.y.)
Coord 2000 |
03076-0358 |
|
Discov num |
HDS 396 |
|
Comp |
|
|
Coord arcsec 2000 |
03 07 33.79 -03 58 17.0 |
|
Date first |
1991 |
|
Date last |
2021 |
|
Obs |
26 |
|
Pa first |
20 |
|
Pa last |
87.6 |
|
P.A. Now (θ) |
48.9° |
|
Sep first |
0.3 |
|
Sep last |
0.095 |
|
Sep. Now (ρ) |
0.179" |
|
Mag pri |
11.69 |
|
Mag sec |
11.71 |
|
delta mag (ΔM) |
0.02 |
|
Spectral class |
K8V+M0.5V (yellow-orange/red) |
|
Pri motion ra |
-265 |
|
Sec motion ra |
|
|
Pri motion dec |
-389 |
|
Sec motion dec |
|
|
Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Eridanus |
|
HIP |
14524 |
|
Tycho2 |
4710-00268-3 |
|
GL |
NN 3202 |
|
Distance |
54.67 |
|
Distance ly |
178.33 |
|
ORBITAL ELEMENTS
Period (P) | 34.5y | ± 0.34 |
Periastron (T) | 2021.01y | ± 0.02 |
Semi-major axis (a) | 0.317a | ± 0.002 |
Eccentricity (e) | 0.647 | ± 0.006 |
Inclination (i) | 131.8° | ± 0.7 |
Longitude of periastron (ω) | 259.1° | ± 0.4 |
Node (Ω) | 40.6° | ± 1.1 |
Notes | | |
Reference | Tok2021c | |
Equinox | 2000 | |
Last observation | 2021 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
342.1 |
0.365 |
2001 |
338.0 |
0.364 |
2002 |
334.0 |
0.362 |
2003 |
329.9 |
0.359 |
2004 |
325.7 |
0.355 |
2005 |
321.4 |
0.350 |
2006 |
317.0 |
0.345 |
2007 |
312.4 |
0.339 |
2008 |
307.7 |
0.333 |
2009 |
302.8 |
0.326 |
2010 |
297.7 |
0.319 |
2011 |
292.4 |
0.311 |
2012 |
286.7 |
0.303 |
2013 |
280.7 |
0.294 |
2014 |
274.3 |
0.283 |
2015 |
267.4 |
0.271 |
2016 |
259.8 |
0.257 |
2017 |
251.1 |
0.239 |
2018 |
240.8 |
0.215 |
2019 |
227.2 |
0.181 |
2020 |
205.0 |
0.130 |
2021 |
147.6 |
0.076 |
2022 |
74.7 |
0.114 |
2023 |
48.9 |
0.179 |
2024 |
36.1 |
0.229 |
2025 |
27.3 |
0.265 |
2026 |
20.5 |
0.293 |
2027 |
14.7 |
0.314 |
2028 |
9.6 |
0.330 |
2029 |
4.9 |
0.342 |
2030 |
0.5 |
0.351 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|