13550-4235 I 401 AB
13h 55m 01.42s -42° 34' 37.1" P.A. 257.00 sep 0.4 mag 9.30,9.60 Sp F5 dist. 64.85 pc (211.54 l.y.)
| Coord 2000 |
13550-4235 |
|
Discov num |
I 401 |
|
Comp |
AB |
|
Coord arcsec 2000 |
13 55 01.42 -42 34 37.1 |
|
| Date first |
1902 |
|
Date last |
2022 |
|
Obs |
19 |
|
| Pa first |
52 |
|
Pa last |
256.5 |
|
P.A. Now (θ) |
256.5° |
|
| Sep first |
0.4 |
|
Sep last |
0.423 |
|
Sep. Now (ρ) |
0.423" |
|
| Mag pri |
9.30 |
|
Mag sec |
9.60 |
|
delta mag (ΔM) |
0.3 |
|
Spectral class |
F5 (yellow-white) |
|
| Pri motion ra |
+002 |
|
Sec motion ra |
|
|
| Pri motion dec |
+023 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
13550-4235 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
224531 |
13 55 01 -42 34 37 |
I 401 AB |
2022 |
19 |
257 |
0.4 |
9.30 |
9.60 |
0.30 |
Y |
<=== |
| Show |
HD 121207 |
224531 |
13 55 01 -42 34 37 |
HJ 4625 AB,C |
2022 |
14 |
7 |
13.6 |
8.76 |
9.40 |
0.64 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Centaurus |
|
SAO |
224531 |
|
HIP |
67961 |
|
Tycho2 |
7798-00146-1 |
|
| Gaia DR2 |
6110353459816356352 |
|
HD |
121207 |
|
BD |
BD-14 3827 |
|
Distance |
64.85 |
|
| Distance ly |
211.54 |
|
ORBITAL ELEMENTS
| Period (P) | 600y | |
Periastron (T) | 1962.1y | |
Semi-major axis (a) | 0.55a | |
| Eccentricity (e) | 0.372 | |
Inclination (i) | 129.7° | |
Longitude of periastron (ω) | 118.7° | |
| Node (Ω) | 84.1° | |
Notes | n | |
Reference | Tok2024b | |
| Equinox | 2000 | |
Last observation | 2022 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
271.4 |
0.378 |
| 2001 |
270.7 |
0.380 |
| 2002 |
269.9 |
0.383 |
| 2003 |
269.2 |
0.386 |
| 2004 |
268.5 |
0.388 |
| 2005 |
267.8 |
0.390 |
| 2006 |
267.1 |
0.393 |
| 2007 |
266.4 |
0.395 |
| 2008 |
265.7 |
0.397 |
| 2009 |
265.0 |
0.399 |
| 2010 |
264.4 |
0.401 |
| 2011 |
263.7 |
0.403 |
| 2012 |
263.0 |
0.405 |
| 2013 |
262.4 |
0.407 |
| 2014 |
261.7 |
0.409 |
| 2015 |
261.1 |
0.411 |
| 2016 |
260.5 |
0.413 |
| 2017 |
259.8 |
0.414 |
| 2018 |
259.2 |
0.416 |
| 2019 |
258.6 |
0.417 |
| 2020 |
258.0 |
0.419 |
| 2021 |
257.4 |
0.420 |
| 2022 |
256.7 |
0.422 |
| 2023 |
256.1 |
0.423 |
| 2024 |
255.5 |
0.424 |
| 2025 |
255.0 |
0.426 |
| 2026 |
254.4 |
0.427 |
| 2027 |
253.8 |
0.428 |
| 2028 |
253.2 |
0.429 |
| 2029 |
252.6 |
0.430 |
| 2030 |
252.0 |
0.431 |
| 2031 |
251.4 |
0.432 |
| 2032 |
250.9 |
0.433 |
| 2033 |
250.3 |
0.434 |
| 2034 |
249.7 |
0.435 |
| 2035 |
249.2 |
0.436 |
| 2036 |
248.6 |
0.436 |
| 2037 |
248.0 |
0.437 |
| 2038 |
247.5 |
0.438 |
| 2039 |
246.9 |
0.438 |
| 2040 |
246.3 |
0.439 |
| 2041 |
245.8 |
0.439 |
| 2042 |
245.2 |
0.440 |
| 2043 |
244.7 |
0.440 |
| 2044 |
244.1 |
0.441 |
| 2045 |
243.6 |
0.441 |
| 2046 |
243.0 |
0.442 |
| 2047 |
242.5 |
0.442 |
| 2048 |
241.9 |
0.442 |
| 2049 |
241.4 |
0.443 |
| 2050 |
240.8 |
0.443 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
