00271-0753 A 431 AB
00h 27m 07.77s -07° 52' 33.6" P.A. 270.00 sep 0.2 mag 8.84,8.95 Sp G5 dist. 55.49 pc (181.01 l.y.)
| Coord 2000 |
00271-0753 |
|
Discov num |
A 431 |
|
Comp |
AB |
|
Coord arcsec 2000 |
00 27 07.77 -07 52 33.6 |
|
| Date first |
1903 |
|
Date last |
2022 |
|
Obs |
80 |
|
| Pa first |
353 |
|
Pa last |
270.4 |
|
P.A. Now (θ) |
261° |
|
| Sep first |
0.2 |
|
Sep last |
0.206 |
|
Sep. Now (ρ) |
0.224" |
|
| Mag pri |
8.84 |
|
Mag sec |
8.95 |
|
delta mag (ΔM) |
0.11 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
-037 |
|
Sec motion ra |
-037 |
|
| Pri motion dec |
+018 |
|
Sec motion dec |
+018 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
00271-0753 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
128768 |
00 27 08 -07 52 34 |
A 431 AB |
2022 |
80 |
270 |
0.2 |
8.84 |
8.95 |
0.11 |
Y |
<=== |
| Show |
|
128768 |
00 27 08 -07 52 34 |
SKF 1423 AB,C |
2015 |
7 |
318 |
110.3 |
8.21 |
14.07 |
5.86 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cetus |
|
SAO |
128768 |
|
HIP |
2143 |
|
Tycho2 |
5262-00207-1 |
|
| Gaia DR2 |
2430329616926916480 |
|
HD |
2333 |
|
ADS |
363 |
|
BD |
BD-08 65 |
|
| Distance |
55.49 |
|
Distance ly |
181.01 |
|
ORBITAL ELEMENTS
| Period (P) | 53.3y | ± 0.2 |
Periastron (T) | 2003.75y | ± 0.35 |
Semi-major axis (a) | 0.362a | ± 0.005 |
| Eccentricity (e) | 0.636 | ± 0.006 |
Inclination (i) | 109.8° | ± 1 |
Longitude of periastron (ω) | 295.2° | ± 1 |
| Node (Ω) | 26.1° | ± 1.5 |
Notes | | |
Reference | Doc2023a | |
| Equinox | 2000 | |
Last observation | 2022 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
199.4 |
0.220 |
| 2001 |
193.1 |
0.166 |
| 2002 |
179.6 |
0.102 |
| 2003 |
125.9 |
0.047 |
| 2004 |
51.9 |
0.084 |
| 2005 |
33.0 |
0.141 |
| 2006 |
24.0 |
0.178 |
| 2007 |
17.4 |
0.197 |
| 2008 |
11.7 |
0.204 |
| 2009 |
6.2 |
0.205 |
| 2010 |
0.6 |
0.201 |
| 2011 |
354.7 |
0.195 |
| 2012 |
348.4 |
0.188 |
| 2013 |
341.6 |
0.181 |
| 2014 |
334.3 |
0.175 |
| 2015 |
326.5 |
0.170 |
| 2016 |
318.3 |
0.167 |
| 2017 |
310.0 |
0.167 |
| 2018 |
301.8 |
0.169 |
| 2019 |
293.9 |
0.174 |
| 2020 |
286.5 |
0.180 |
| 2021 |
279.7 |
0.189 |
| 2022 |
273.6 |
0.200 |
| 2023 |
268.1 |
0.211 |
| 2024 |
263.2 |
0.224 |
| 2025 |
258.8 |
0.237 |
| 2026 |
254.9 |
0.251 |
| 2027 |
251.4 |
0.264 |
| 2028 |
248.3 |
0.278 |
| 2029 |
245.4 |
0.292 |
| 2030 |
242.8 |
0.305 |
| 2031 |
240.4 |
0.318 |
| 2032 |
238.3 |
0.331 |
| 2033 |
236.2 |
0.343 |
| 2034 |
234.3 |
0.354 |
| 2035 |
232.5 |
0.365 |
| 2036 |
230.8 |
0.374 |
| 2037 |
229.2 |
0.383 |
| 2038 |
227.7 |
0.390 |
| 2039 |
226.2 |
0.396 |
| 2040 |
224.7 |
0.401 |
| 2041 |
223.3 |
0.404 |
| 2042 |
221.9 |
0.406 |
| 2043 |
220.5 |
0.406 |
| 2044 |
219.1 |
0.404 |
| 2045 |
217.6 |
0.400 |
| 2046 |
216.2 |
0.393 |
| 2047 |
214.6 |
0.384 |
| 2048 |
213.0 |
0.371 |
| 2049 |
211.3 |
0.354 |
| 2050 |
209.3 |
0.333 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
