00271-0753 A 431 AB
00h 27m 07.77s -07° 52' 33.6" P.A. 288.00 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 |
2019 |
|
Obs |
79 |
|
| Pa first |
353 |
|
Pa last |
288.4 |
|
P.A. Now (θ) |
270.9° |
|
| Sep first |
0.2 |
|
Sep last |
0.178 |
|
Sep. Now (ρ) |
0.2" |
|
| 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 |
2019 |
79 |
288 |
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) | 53.56y | |
Periastron (T) | 2003.58y | |
Semi-major axis (a) | 0.364a | |
| Eccentricity (e) | 0.644 | |
Inclination (i) | 109° | |
Longitude of periastron (ω) | 293° | |
| Node (Ω) | 25.5° | |
Notes | | |
Reference | Sca2015a | |
| Equinox | 2000 | |
Last observation | 2013 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
199.5 |
0.216 |
| 2001 |
193.2 |
0.161 |
| 2002 |
179.0 |
0.096 |
| 2003 |
115.6 |
0.044 |
| 2004 |
46.8 |
0.091 |
| 2005 |
30.6 |
0.147 |
| 2006 |
22.5 |
0.182 |
| 2007 |
16.5 |
0.200 |
| 2008 |
11.3 |
0.208 |
| 2009 |
6.2 |
0.208 |
| 2010 |
1.0 |
0.205 |
| 2011 |
355.6 |
0.199 |
| 2012 |
349.8 |
0.192 |
| 2013 |
343.5 |
0.185 |
| 2014 |
336.7 |
0.178 |
| 2015 |
329.5 |
0.172 |
| 2016 |
321.8 |
0.168 |
| 2017 |
313.8 |
0.166 |
| 2018 |
305.7 |
0.166 |
| 2019 |
297.8 |
0.169 |
| 2020 |
290.3 |
0.174 |
| 2021 |
283.2 |
0.181 |
| 2022 |
276.8 |
0.190 |
| 2023 |
270.9 |
0.200 |
| 2024 |
265.7 |
0.212 |
| 2025 |
261.0 |
0.224 |
| 2026 |
256.8 |
0.237 |
| 2027 |
253.1 |
0.250 |
| 2028 |
249.7 |
0.263 |
| 2029 |
246.7 |
0.277 |
| 2030 |
243.9 |
0.290 |
|
|
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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